chore(deps): update pre-commit hook davidanson/markdownlint-cli2 to v0.20.0 (#1387)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.pre-commit-config.yaml

@@ -61,7 +61,7 @@ repos:
       - id: committed
 
   - repo: https://github.com/DavidAnson/markdownlint-cli2
-    rev: v0.19.1
+    rev: v0.20.0
     hooks:
       - id: markdownlint-cli2