Don't scan common symlinks and use github-pr-annotations

We have an excessive symlink farm pointint at guides/common, vale
rescans that every time when scanning the individual guides, which makes
it super slow (35min on my laptop), excluding the links in guides/doc-*
makes it quite fast (90sec on my latop) as it now only scans
guides/common once.

Also exclicitly use the github-pr-annotations reporter, which works w/o
elevated GITHUB_TOKEN privileges and thus also from forked repos.

.github/workflows/lint-with-vale.yml

@@ -11,11 +11,9 @@ jobs:
       - uses: errata-ai/vale-action@reviewdog
         with:
           filter_mode: diff_context
-          vale_flags: "--no-exit --minAlertLevel=error"
-          reporter: github-pr-review
+          vale_flags: "--no-exit --minAlertLevel=error --glob=!*/doc-*/common/*"
+          # github-pr-annotations doesn't require elevated token privileges
+          reporter: github-pr-annotations
           fail_on_error: true
-        env:
-          # Required, set by GitHub actions automatically:
-          # https://docs.github.com/en/actions/security-guides/automatic-token-authentication#about-the-github_token-secret
-          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
-          REVIEWDOG_GITHUB_API_TOKEN: ${{secrets.GITHUB_TOKEN}}
+          # let's limit this a bit
+          files: guides/