doc: edit process.config deprecation text

PR-URL: nodejs#41889
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Mestery <mestery@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

doc/api/deprecations.md

@@ -2898,10 +2898,9 @@ changes:
 
 Type: Runtime
 
-The `process.config` property is intended to provide access to configuration
-settings set when the Node.js binary was compiled. However, the property has
-been mutable by user code making it impossible to rely on. The ability to
-change the value has been deprecated and will be disabled in the future.
+The `process.config` property provides access to Node.js compile-time settings.
+However, the property is mutable and therefore subject to tampering. The ability
+to change the value will be removed in a future version of Node.js.
 
 ### DEP0151: Main index lookup and extension searching