Fix deploy script.

Author: LegNeato

.github/workflows/main.yml

@@ -11,7 +11,7 @@ jobs:
     if: github.ref != 'refs/heads/main'
     steps:
       - name: 'Checkout'
-        uses: actions/checkout@main
+        uses: actions/checkout@v2
       - name: 'Build only' 
         uses: shalzz/zola-deploy-action@v0.19.1
         env:
@@ -22,8 +22,8 @@ jobs:
     if: github.ref == 'refs/heads/main'
     steps:
       - name: 'Checkout'
-        uses: actions/checkout@main
-       name: 'Build and deploy'
+        uses: actions/checkout@v2
+      - name: 'Build and deploy'
         uses: shalzz/zola-deploy-action@v0.19.1
         env:
           PAGES_BRANCH: gh-pages