fix silly typo

Author: tefkah

.github/workflows/generate-graph.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: clone
-      - uses: actions/checkout@v2
+        uses: actions/checkout@v2
 
       - name: Install Node.js
         uses: actions/setup-node@v3