Fix gha smells:

- Use fixed version for runs-on argument
- Run tests on multiple OS's
- Avoid workflows without comments

.github/workflows/ci.yml

@@ -12,10 +12,13 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    name: Build on ${{matrix.os}} with Java ${{matrix.java}}
+    runs-on: ${{matrix.os}}
     strategy:
+      fail-fast: false
       matrix:
         java: [8, 11, 17, 21]
+        os: [ubunutu-latest, windows-latest]
     steps:
       - name: Checkout
         uses: actions/checkout@v4

.github/workflows/document-lint.yml

@@ -17,8 +17,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - run: npm install -g markdownlint-cli
-
+      - run: npm install -g [email protected]
+      # Run markdown lint with the following rules disabled: 
+      # no hard tabs, line length, no duplicate heading, ordered list item prefix, no inline html and no emphasis as heading
       - name: use markdownlint-cli to lint markdown file
         run: |
           find ./ -name "*.md" | grep -v vendor | grep -v commandline | grep -v .github | grep -v swagger | grep -v api | \