[pre-commit.ci] pre-commit autoupdate (#20)

updates:
- [github.com/asottile/blacken-docs: v1.12.1 → 1.13.0](adamchainz/blacken-docs@v1.12.1...1.13.0)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.pre-commit-config.yaml

@@ -33,7 +33,7 @@ repos:
 # === END CENTRALLY MAINTAINED FILE ===
 
   - repo: https://github.com/asottile/blacken-docs
-    rev: v1.12.1
+    rev: 1.13.0
     hooks:
     -   id: blacken-docs
         additional_dependencies: [black==22.6.0]