fixed github action file indention problem

.github/workflows/firebase-hosting-merge.yml

@@ -3,18 +3,18 @@
 
 name: Deploy to Firebase Hosting on merge
 on:
-	push:
-		branches:
-			- dev
+  push:
+    branches:
+      - dev
 jobs:
-	build_and_deploy:
-		runs-on: ubuntu-latest
-		steps:
-			- uses: actions/checkout@v2
-			- run: cd source && yarn install && yarn build
-			- uses: FirebaseExtended/action-hosting-deploy@v0
-			  with:
-				  repoToken: "${{ secrets.GITHUB_TOKEN }}"
-				  firebaseServiceAccount: "${{ secrets.FIREBASE_SERVICE_ACCOUNT_DEVELOPOMP_SITE }}"
-				  channelId: live
-				  projectId: developomp-site
+  build_and_deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: cd source && yarn install && yarn build
+      - uses: FirebaseExtended/action-hosting-deploy@v0
+          with:
+            repoToken: "${{ secrets.GITHUB_TOKEN }}"
+            firebaseServiceAccount: "${{ secrets.FIREBASE_SERVICE_ACCOUNT_DEVELOPOMP_SITE }}"
+            channelId: live
+            projectId: developomp-site