doc: fix process.finalization changes list ordering

The `changes` lists for `process.finalization.register()` and
`process.finalization.registerBeforeExit()` must be ordered newest first.
PR #66436 (marking these APIs as release candidate) has already landed in
`main` at v26.12.0, so the new #66482 (REPLACEME) entry must come before
it. Leaving both as REPLACEME makes the merged file out of order and fails
the `lint-md` check.

Refs: #66482

Signed-off-by: Matteo Collina <matteo.collina@gmail.com>
Assisted-by: pi

Author: mcollina

doc/api/process.md

@@ -2063,12 +2063,12 @@ Since it's not possible to build Node.js without libuv, this value is always `tr
 <!-- YAML
 added: v22.5.0
 changes:
-  - version: REPLACEME
-    pr-url: https://github.com/nodejs/node/pull/66436
-    description: Marked as release candidate.
   - version: REPLACEME
     pr-url: https://github.com/nodejs/node/pull/66482
     description: Returns a function that removes the registration.
+  - version: v26.12.0
+    pr-url: https://github.com/nodejs/node/pull/66436
+    description: Marked as release candidate.
 -->
 
 > Stability: 1.2 - Release candidate
@@ -2191,12 +2191,12 @@ unregister();
 <!-- YAML
 added: v22.5.0
 changes:
-  - version: REPLACEME
-    pr-url: https://github.com/nodejs/node/pull/66436
-    description: Marked as release candidate.
   - version: REPLACEME
     pr-url: https://github.com/nodejs/node/pull/66482
     description: Returns a function that removes the registration.
+  - version: v26.12.0
+    pr-url: https://github.com/nodejs/node/pull/66436
+    description: Marked as release candidate.
 -->
 
 > Stability: 1.2 - Release candidate