doc: fix conditional exports flag removal version

Backport-PR-URL: #35757
PR-URL: #35428
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
Reviewed-By: Matteo Collina <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: James M Snell <[email protected]>

Author: aduh95

doc/api/packages.md

@@ -853,7 +853,7 @@ changes:
     pr-url: https://github.com/nodejs/node/pull/29978
     description: Implement conditional exports.
   - version:
-    - v12.15.0
+    - v12.16.0
     pr-url: https://github.com/nodejs/node/pull/31001
     description: Remove the `--experimental-conditional-exports` option.
   - version: