Move pages under tldr, lint run.sh, update docs

tldr/pre-commit

@@ -0,0 +1,25 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pre-commit
+
+> Create Git hooks that get run before a commit.
+> More information: <https://pre-commit.com>.
+
+- Install pre-commit into your Git hooks:
+
+`pre-commit install`
+
+- Run pre-commit hooks on all staged files:
+
+`pre-commit run`
+
+- Run pre-commit hooks on all files, staged or unstaged:
+
+`pre-commit run --all-files`
+
+- Clean pre-commit cache:
+
+`pre-commit clean`