GH Actions: minor tweaks

* Let steps always have a name.
* Update an outdated link.

Author: jrfnl

.github/workflows/qa.yml

@@ -40,7 +40,7 @@ jobs:
         run: composer validate --no-check-all --strict
 
       # Verify the package can be installed succesfully.
-      # @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:
@@ -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
 
       # Validate the ruleset XML file.
       # @link http://xmlsoft.org/xmllint.html