squash: set PR url

Author: LiviaMedeiros

doc/api/fs.md

@@ -1389,7 +1389,7 @@ changes:
 added: v10.0.0
 changes:
   - version: REPLACEME
-    pr-url: https://github.com/nodejs/node/pull/00000
+    pr-url: https://github.com/nodejs/node/pull/42894
     description: If the `type` argument is `null` or omitted, Node.js will
                  autodetect `target` type and automatically
                  select `dir` or `file`.