doc: fix unassigned deprecation code

Forgot to assign the deprecation code when landing
1f8d527

PR-URL: #15741
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

Author: jasnell

doc/api/deprecations.md

@@ -710,8 +710,8 @@ function for [`util.inspect()`][] is deprecated. Use [`util.inspect.custom`][]
 instead. For backwards compatibility with Node.js prior to version 6.4.0, both
 may be specified.
 
-<a id="DEP00XX"></a>
-### DEP00XX: path.\_makeLong()
+<a id="DEP0080"></a>
+### DEP0080: path.\_makeLong()
 
 Type: Documentation-only
 

lib/path.js

@@ -1629,7 +1629,7 @@ const posix = {
 posix.win32 = win32.win32 = win32;
 posix.posix = win32.posix = posix;
 
-// Legacy internal API, docs-only deprecated: DEP00XX
+// Legacy internal API, docs-only deprecated: DEP0080
 win32._makeLong = win32.toNamespacedPath;
 posix._makeLong = posix.toNamespacedPath;