doc: make YAML matter consistent in crypto.md

This fixes YAML that gets incorrectly processed by our tooling.

Refs: #29910 (comment)

PR-URL: #30016
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>

doc/api/crypto.md

@@ -1043,9 +1043,7 @@ console.log(hash.digest('hex'));
 
 ### `hash.copy([options])`
 <!-- YAML
-added:
-  - version: REPLACEME
-    pr-url: https://github.com/nodejs/node/pull/29910
+added: REPLACEME
 -->
 
 * `options` {Object} [`stream.transform` options][]