doc: edit for concision

This removes some wordy phrases (notably "it is important to note
that").

PR-URL: https://github.com/nodejs/node/pull/17891
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

doc/api/async_hooks.md

@@ -484,9 +484,8 @@ fs.open(path, 'r', (err, fd) => {
 });
 ```
 
-It is important to note that the ID returned fom `executionAsyncId()` is related
-to execution timing, not causality (which is covered by `triggerAsyncId()`). For
-example:
+The ID returned fom `executionAsyncId()` is related to execution timing, not
+causality (which is covered by `triggerAsyncId()`). For example:
 
 ```js
 const server = net.createServer(function onConnection(conn) {
@@ -538,9 +537,9 @@ own resources.
 
 The `init` hook will trigger when an `AsyncResource` is instantiated.
 
-*Note*: It is important that `before`/`after` calls are unwound
-in the same order they are called. Otherwise an unrecoverable exception
-will occur and the process will abort.
+*Note*: `before` and `after` calls must be unwound in the same order that they
+are called. Otherwise, an unrecoverable exception will occur and the process
+will abort.
 
 The following is an overview of the `AsyncResource` API.
 

doc/api/errors.md

@@ -312,11 +312,10 @@ location information will be displayed for that frame. Otherwise, the
 determined function name will be displayed with location information appended
 in parentheses.
 
-It is important to note that frames are **only** generated for JavaScript
-functions. If, for example, execution synchronously passes through a C++ addon
-function called `cheetahify`, which itself calls a JavaScript function, the
-frame representing the `cheetahify` call will **not** be present in the stack
-traces:
+Frames are only generated for JavaScript functions. If, for example, execution
+synchronously passes through a C++ addon function called `cheetahify` which
+itself calls a JavaScript function, the frame representing the `cheetahify` call
+will not be present in the stack traces:
 
 ```js
 const cheetahify = require('./native-binding.node');

doc/api/process.md

@@ -374,16 +374,11 @@ process.on('SIGINT', handle);
 process.on('SIGTERM', handle);
 ```
 
-*Note*: An easy way to send the `SIGINT` signal is with `<Ctrl>-C` in most
-terminal programs.
-
-It is important to take note of the following:
-
 * `SIGUSR1` is reserved by Node.js to start the [debugger][]. It's possible to
   install a listener but doing so will _not_ stop the debugger from starting.
 * `SIGTERM` and `SIGINT` have default handlers on non-Windows platforms that
-  resets the terminal mode before exiting with code `128 + signal number`. If
-  one of these signals has a listener installed, its default behavior will be
+  reset the terminal mode before exiting with code `128 + signal number`. If one
+  of these signals has a listener installed, its default behavior will be
   removed (Node.js will no longer exit).
 * `SIGPIPE` is ignored by default. It can have a listener installed.
 * `SIGHUP` is generated on Windows when the console window is closed, and on
@@ -394,7 +389,7 @@ It is important to take note of the following:
   installed its default behavior will be removed.
 * `SIGTERM` is not supported on Windows, it can be listened on.
 * `SIGINT` from the terminal is supported on all platforms, and can usually be
-  generated with `CTRL+C` (though this may be configurable). It is not generated
+  generated with `<Ctrl>+C` (though this may be configurable). It is not generated
   when terminal raw mode is enabled.
 * `SIGBREAK` is delivered on Windows when `<Ctrl>+<Break>` is pressed, on
   non-Windows platforms it can be listened on, but there is no way to send or
@@ -989,10 +984,10 @@ process.exit(1);
 
 The shell that executed Node.js should see the exit code as `1`.
 
-It is important to note that calling `process.exit()` will force the process to
-exit as quickly as possible *even if there are still asynchronous operations
-pending* that have not yet completed fully, *including* I/O operations to
-`process.stdout` and `process.stderr`.
+Calling `process.exit()` will force the process to exit as quickly as possible
+even if there are still asynchronous operations pending that have not yet
+completed fully, including I/O operations to `process.stdout` and
+`process.stderr`.
 
 In most situations, it is not actually necessary to call `process.exit()`
 explicitly. The Node.js process will exit on its own *if there is no additional

doc/api/repl.md

@@ -114,9 +114,8 @@ $ node repl_test.js
 'message'
 ```
 
-It is important to note that context properties are *not* read-only by default.
-To specify read-only globals, context properties must be defined using
-`Object.defineProperty()`:
+Context properties are not read-only by default. To specify read-only globals,
+context properties must be defined using `Object.defineProperty()`:
 
 ```js
 const repl = require('repl');

doc/api/stream.md

@@ -1426,12 +1426,11 @@ successfully or failed with an error. The first argument passed to the
 `callback` must be the `Error` object if the call failed or `null` if the
 write succeeded.
 
-It is important to note that all calls to `writable.write()` that occur between
-the time `writable._write()` is called and the `callback` is called will cause
-the written data to be buffered. Once the `callback` is invoked, the stream will
-emit a [`'drain'`][] event. If a stream implementation is capable of processing
-multiple chunks of data at once, the `writable._writev()` method should be
-implemented.
+All calls to `writable.write()` that occur between the time `writable._write()`
+is called and the `callback` is called will cause the written data to be
+buffered. Once the `callback` is invoked, the stream will emit a [`'drain'`][]
+event. If a stream implementation is capable of processing multiple chunks of
+data at once, the `writable._writev()` method should be implemented.
 
 If the `decodeStrings` property is set in the constructor options, then
 `chunk` may be a string rather than a Buffer, and `encoding` will

doc/api/vm.md

@@ -87,9 +87,8 @@ changes:
     depending on whether code cache data is produced successfully.
 
 Creating a new `vm.Script` object compiles `code` but does not run it. The
-compiled `vm.Script` can be run later multiple times. It is important to note
-that the `code` is not bound to any global object; rather, it is bound before
-each run, just for that run.
+compiled `vm.Script` can be run later multiple times. The `code` is not bound to
+any global object; rather, it is bound before each run, just for that run.
 
 ### script.runInContext(contextifiedSandbox[, options])
 <!-- YAML