chore(deps): update davidanson/markdownlint-cli2-action action to v20

.gitea/workflows/markdown-linters.yaml

@@ -17,6 +17,6 @@ jobs:
     - ubuntu-latest
     steps:
     - uses: actions/checkout@v4.2.2
-    - uses: DavidAnson/markdownlint-cli2-action@v19.1.0
+    - uses: DavidAnson/markdownlint-cli2-action@v20.0.0
       with:
         globs: '**/*.md'

README.md

@@ -6,5 +6,5 @@ This project contains all sources to build the container image `git.cryptic.syst
 primary goal of this project is to package the binary `markdownlint-ci` as container image. The source code of the
 binary can be found in the upstream project of [igorshubovych](https://github.com/igorshubovych/markdownlint-cli).
 
-The workflow or how `markdownlint-ci` can in general be used is documented
-[here](https://github.com/igorshubovych/markdownlint-cli#usage).
+The workflow or how `markdownlint-ci` can be used is pretty good
+[documented](https://github.com/igorshubovych/markdownlint-cli#usage).