pre-commit: stop specifying types in hook (#274)

* pre-commit: stop specifying types in hook

This PR updates the pre-commit hook to not force `yaml` files. `yamlfmt`
is designed to accept all files in a working directory and filter
through what files are accepted based on configuration (i.e. it's
perfectly valid for users to configure `yamlfmt` to accept files that
wouldn't match pre-commit's `yaml` type).

* also update hook version cause I'm gonna bump for this

Author: braydonk

.pre-commit-hooks.yaml

@@ -17,4 +17,3 @@
   description: This hook uses github.com/google/yamlfmt to format yaml files. Requires Go >1.18 to be installed.
   entry: yamlfmt
   language: golang
-  types: [yaml]

docs/pre-commit.md

@@ -4,7 +4,7 @@ Starting in v0.7.1, `yamlfmt` can be used as a hook for the popular [pre-commit]
 
 ```yaml
 - repo: https://github.com/google/yamlfmt
-  rev: v0.17.0
+  rev: v0.18.0
   hooks:
     - id: yamlfmt
 ```
@@ -17,7 +17,7 @@ If you would prefer to manage your `yamlfmt` installation yourself, you can have
 
 ```yaml
 - repo: https://github.com/google/yamlfmt
-  rev: v0.17.0
+  rev: v0.18.0
   hooks:
     - id: yamlfmt
       language: system