[pre-commit.ci] pre-commit autoupdate (#3432)

* [pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/psf/black: 21.9b0 → 21.10b0](https://github.com/psf/black/compare/21.9b0...21.10b0)

* Update blacken-docs too

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

.pre-commit-config.yaml

@@ -44,7 +44,7 @@ repos:
 
 # Black, the code formatter, natively supports pre-commit
 - repo: https://github.com/psf/black
-  rev: 21.9b0 # Keep in sync with blacken-docs
+  rev: 21.10b0 # Keep in sync with blacken-docs
   hooks:
   - id: black
 
@@ -53,7 +53,7 @@ repos:
   hooks:
   - id: blacken-docs
     additional_dependencies:
-    - black==21.9b0 # keep in sync with black hook
+    - black==21.10b0 # keep in sync with black hook
 
 # Changes tabs to spaces
 - repo: https://github.com/Lucas-C/pre-commit-hooks