Add Markdown linter & go vet GitHub actions and fix lint issues detected by it

.github/workflows/golangci-lint.yml → .github/workflows/lint.yml

@@ -11,16 +11,24 @@ permissions:
   contents: read
   # Optional: allow read access to pull request. Use with `only-new-issues` option.
   # pull-requests: read
+
 jobs:
   golangci:
-    name: lint
+    name: golangci
     runs-on: ubuntu-latest
     steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
       # Upgraded Go version? Make sure to upgrade it in the GitHub Actions setup, the Dockerfile and the go.mod as well, so the linter and tests run the same version.
       - uses: actions/setup-go@v3
         with:
           go-version: 1.21
-      - uses: actions/checkout@v3
+
+      - name: go vet
+        run: go vet ./...
+        working-directory: src
+
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
@@ -44,4 +52,18 @@ jobs:
           # skip-pkg-cache: true
 
           # Optional: if set to true then the action don't cache or restore ~/.cache/go-build.
-          # skip-build-cache: true
+          # skip-build-cache: true
+
+  markdownlint:
+    name: Check for Markdown errors
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      # Tip: run the markdown lint action locally with '--fix' to automatically fix some of the issues:
+      # docker run -v $PWD:/workdir ghcr.io/igorshubovych/markdownlint-cli:latest "**/*.md" --fix
+      - uses: articulate/actions-markdownlint@v1
+        with:
+          config: .markdownlint.json
+          files: '**/*.md'

.markdownlint.json

@@ -0,0 +1,5 @@
+{
+  "default": true,
+  "MD013": false,
+  "MD033": false
+}

CODE_OF_CONDUCT.md

@@ -55,7 +55,7 @@ further defined and clarified by project maintainers.
 ## Enforcement
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at [email protected]. All
+reported by contacting the project team at <[email protected]>. All
 complaints will be reviewed and investigated and will result in a response that
 is deemed necessary and appropriate to the circumstances. The project team is
 obligated to maintain confidentiality with regard to the reporter of an incident.
@@ -68,9 +68,9 @@ members of the project's leadership.
 ## Attribution
 
 This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+available at <https://www.contributor-covenant.org/version/1/4/code-of-conduct.html>
 
 [homepage]: https://www.contributor-covenant.org
 
 For answers to common questions about this code of conduct, see
-https://www.contributor-covenant.org/faq
+<https://www.contributor-covenant.org/faq>