doc: remove experimental from --enable-source-maps

PR-URL: nodejs#37540
Refs: nodejs#37362
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>

doc/node.1

@@ -137,7 +137,7 @@ Requires Node.js to be built with
 .Sy ./configure --openssl-fips .
 .
 .It Fl -enable-source-maps
-Enable experimental Source Map V3 support for stack traces.
+Enable Source Map V3 support for stack traces.
 .
 .It Fl -experimental-import-meta-resolve
 Enable experimental ES modules support for import.meta.resolve().