Add rstcheck pre-commit hook (#530)

Author: adamchainz

.pre-commit-config.yaml

@@ -23,6 +23,12 @@ repos:
   - id: setup-cfg-fmt
     args:
     - --include-version-classifiers
+- repo: https://github.com/rstcheck/rstcheck
+  rev: v6.1.1
+  hooks:
+  - id: rstcheck
+    additional_dependencies:
+    - tomli==2.0.1
 - repo: https://github.com/asottile/pyupgrade
   rev: v3.3.1
   hooks:

pyproject.toml

@@ -23,3 +23,6 @@ warn_unreachable = true
 [[tool.mypy.overrides]]
 module = "tests.*"
 allow_untyped_defs = true
+
+[tool.rstcheck]
+report_level = "ERROR"