Changed . token to _dot

This change allows the dotfiles to work with chezmoi (e.g: on windows)
and improves grepability with neovim/telescope

dot_config/nushell/nu_scripts/custom-completions/pre-commit/README.md

@@ -0,0 +1,13 @@
+# pre-commit completions
+
+Completions for [pre-commit](https://pre-commit.com/), a framework for managing and maintaining multi-language pre-commit hooks.
+
+## Usage
+
+```nushell
+use pre-commit-completions.nu *
+```
+or
+```nushell
+source pre-commit-completions.nu
+```