chore(versioning): Fix header level

Author: anishkny

.versionrc.js

@@ -4,7 +4,7 @@ module.exports = {
 All notable changes to this project will be documented in this file.
 See [commit-and-tag-version](https://github.com/absolute-version/commit-and-tag-version) for commit guidelines.
 
-### [Unreleased](https://github.com/anishkny/playwright-test-coverage/commits/main) (if any)
+## [Unreleased](https://github.com/anishkny/playwright-test-coverage/commits/main) (if any)
 `,
   scripts: {
     // Update version number in test/package-lock.json