doc: add missing status to DEP0121

PR-URL: https://github.com/nodejs/node/pull/27950
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

doc/api/deprecations.md

@@ -2320,6 +2320,8 @@ changes:
     description: Runtime deprecation.
 -->
 
+Type: Runtime
+
 The undocumented `net._setSimultaneousAccepts()` function was originally
 intended for debugging and performance tuning when using the `child_process`
 and `cluster` modules on Windows. The function is not generally useful and