dbus: Fix typos

Pick-to: 5.15 6.2
Change-Id: I9efce6a3163ca6564d511c994776ff96999909b4
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/dbus/doc/src/dbus-adaptors.qdoc

@@ -190,7 +190,7 @@
 
     The delayed reply itself is requested from Qt D-Bus by calling
     QDBusMessage::reply() on the original message. It then becomes the
-    resposibility of the called code to eventually send a reply to the
+    responsibility of the called code to eventually send a reply to the
     caller.
 
     \warning When a caller places a method call and waits for a reply, it will

src/dbus/qdbusabstractadaptor.cpp

@@ -166,7 +166,7 @@ QDBusAbstractAdaptor::~QDBusAbstractAdaptor()
     Toggles automatic signal relaying from the real object (see object()).
 
     Automatic signal relaying consists of signal-to-signal connection of the signals on the parent
-    that have the exact same method signatue in both classes.
+    that have the exact same method signature in both classes.
 
     If \a enable is set to true, connect the signals; if set to false, disconnect all signals.
 */

src/dbus/qdbusargument.cpp

@@ -710,7 +710,7 @@ const QDBusArgument &QDBusArgument::operator>>(qulonglong &arg) const
 /*!
     \overload
     Extracts one D-Bus primitive argument of type \c{DOUBLE}
-    (double-precision floating pount) from the D-Bus stream.
+    (double-precision floating point) from the D-Bus stream.
 */
 const QDBusArgument &QDBusArgument::operator>>(double &arg) const
 {

src/dbus/qdbuserror.cpp

@@ -359,7 +359,7 @@ QT_END_NAMESPACE
 /*
 MSVC2015 has the warning C4503 at the end of the file:
 QtPrivate::StaticStringBuilder<QtPrivate::IndexesList<...> - decorated name length exceeded, name was truncated
-It is used by qOffsetStringArray in a constexpr evaulation and this code does not exist in the object file,
+It is used by qOffsetStringArray in a constexpr evaluation and this code does not exist in the object file,
 but we still have the warning or even error with -WX flag
 */
 QT_WARNING_DISABLE_MSVC(4503)