Help: Add notes for `file(CREATE_LINK)` subcommand

Help/release/3.14.rst

@@ -56,6 +56,9 @@ Command-Line
 Commands
 --------
 
+* The :command:`file` command learned a new sub-command, ``CREATE_LINK``,
+  which can be used to create hard or symbolic links.
+
 * The :command:`file` command learned a new sub-command, ``READ_SYMLINK``,
   which can be used to determine the path that a symlink points to.