add cheatsheet check script

.github/workflows/ci.yml

@@ -63,3 +63,25 @@ jobs:
       - name: Build darwin binary
         run: |
           GOOS=darwin go build
+  check-cheatsheet:
+    runs-on: ubuntu-latest
+    env:
+      GOFLAGS: -mod=vendor
+      GOARCH: amd64
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Setup Go
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.16.x
+      - name: Cache build
+        uses: actions/cache@v1
+        with:
+          path: ~/.cache/go-build
+          key: ${{runner.os}}-go-${{hashFiles('**/go.sum')}}-build
+          restore-keys: |
+            ${{runner.os}}-go-
+      - name: Check Cheatsheet
+        run: |
+          go run scripts/cheatsheet/main.go check