remove pre-commit from ci

.github/workflows/go.yml

@@ -32,14 +32,6 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-go-
 
-    - uses: actions/cache@v2
-      with:
-        path: |
-          ~/.cache/pip
-        key: ${{ runner.os }}-pip
-        restore-keys: |
-          ${{ runner.os }}-pip
-
     - name: Set up MySQL
       run: |
         sudo /etc/init.d/mysql start
@@ -56,13 +48,6 @@ jobs:
       with:
         go-version: 1.18
 
-    - name: Run pre-commit
-      run: |
-        pip install pre-commit
-        pre-commit install-hooks
-        pre-commit run markdownlint --files=README.md --verbose
-        pre-commit run detect-secrets --all-files --verbose
-
     - name: Install Migration Tool
       run: go install github.com/c9s/rockhopper/cmd/rockhopper@v1.2.1
 

CONTRIBUTING.md

@@ -22,6 +22,15 @@ If you find an issue to work on, you are welcome to open a PR with a fix.
 
 ### Making Changes
 
+Install pre-commit to check your changes before you commit:
+
+    pip install pre-commit
+    pre-commit install
+    pre-commit run markdownlint --files=README.md --verbose
+    pre-commit run detect-secrets --all-files --verbose
+
+See <https://pre-commit.com/> for more details.
+
 For new large features, such as integrating binance futures contracts, please propose a discussion first before you start working on it.
 
 For new small features, you could open a pull request directly.