test markdownlint-cli2's showFound config, and MD052's shortcut_syntax

.github/workflows/pull-request-checks.yml

@@ -1,7 +1,7 @@
 name: "Pull Request Checks"
 on: pull_request
 jobs:
-  # Ensure that the changelog file is updated
+  # Ensure that the changelog file has been updated in this PR
   check-changelog-change:
     runs-on: ubuntu-latest
     steps:
@@ -15,11 +15,8 @@ jobs:
       - name: Install the markdownlint-problem-matcher action
         uses: xt0rted/markdownlint-problem-matcher@v2
       - name: Install markdownlint-cli2
-        # We use markdownlint-cli2 instead of markdownlint-cli
-        # because its default output includes the version of the CLI and of markdownlint
         run: npm install -g markdownlint-cli2
-      - name: List files that will be processed
-        # Can be removed once https://github.com/DavidAnson/markdownlint-cli2/issues/205 is resolved
-        run: npx --silent glob '**/*.md'
+      - name: Configure markdownlint-cli2
+        run: echo '{ "showFound": true }' > .markdownlint-cli2.jsonc
       - name: Run markdownlint
         run: markdownlint-cli2 '**/*.md'