GH Actions: minor tweaks

* Update a URL which is no longer valid.
* Ensure all steps have a name.

.github/workflows/basic-qa.yml

@@ -54,7 +54,8 @@ jobs:
 
       # Show XML violations inline in the file diff.
       # @link https://github.com/marketplace/actions/xmllint-problem-matcher
-      - uses: korelstar/xmllint-problem-matcher@v1
+      - name: Enable showing XML issues inline
+        uses: korelstar/xmllint-problem-matcher@v1
 
       - name: Check the code style of the PHP files
         id: phpcs
@@ -185,7 +186,7 @@ jobs:
 
       # Install dependencies and handle caching in one go.
       # Dependencies need to be installed to make sure the PHPCS and PHPUnit classes are recognized.
-      # @link https://github.com/marketplace/actions/install-composer-dependencies
+      # @link https://github.com/marketplace/actions/install-php-dependencies-with-composer
       - name: Install Composer dependencies
         uses: "ramsey/composer-install@v2"
         with: