doc: fix lint warnings in doc/api/assert.md

[richardlau]

Addresses the lint warnings:

Items in `changes` list are not in order nodejs-yaml-comments

Refs: #58849

---

node-test-linter is failing for main,
e.g. https://ci.nodejs.org/job/node-test-linter/62229/console

08:10:40 Running Markdown linter...
08:10:40 doc/api/assert.md
08:10:40 342:1-402:4 warning Items in `changes` list are not in order nodejs-yaml-comments remark-lint
08:10:40 545:1-597:4 warning Items in `changes` list are not in order nodejs-yaml-comments remark-lint
08:12:59 
08:12:59 ⚠ 2 warnings
08:12:59 make: *** [Makefile:1392: tools/.mdlintstamp] Error 1

The new entries in #58849 should have been placed at the top of the changes list, but it didn't fail the linter there because the entries above it had the same REPLACEME version holder as they had not yet been released (is this fixable in the lint rule?). Now that the other changes have landed in Node.js 25.0.0 their version has been changed to v25.0.0 which means that the entries for #58849 are now out of order.

[richardlau]

Duplicate of #60304