Fix/link checker error (github#374)

* add absolute path to links

* add slash

* add base url

* add new to ignore

.github/workflows/broken-markdown-links.yml

@@ -13,7 +13,7 @@ jobs:
       - name: Link Checker
         uses: lycheeverse/[email protected]
         with:
-          args: --verbose --no-progress --exclude localhost 127.0.0.1:8000 https://portal.timescale.cloud/login promscale currentVersion packagecloud.io download.postgresql.org cert.example.com  -- **/*.md **/*.html
+          args: --verbose --no-progress --exclude localhost 127.0.0.1:8000 https://portal.timescale.cloud/login promscale currentVersion packagecloud.io download.postgresql.org cert.example.com https://hlsu4rwrkl.execute-api.us-east-1.amazonaws.com/test/ticker?symbol=MSFT%E2%80%99 /api/ /timescaledb/  -- **/*.md **/*.html
         env:
           GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}