Trim excess whitespace

.github/workflows/docker-3.1dev.yml

@@ -2,7 +2,7 @@ name: docker-3.1dev
 
 on:
   push:
-    branches: 
+    branches:
       - 3.1dev
   workflow_dispatch:
   schedule:
@@ -19,12 +19,12 @@ jobs:
 
     steps:
       - name: Source checkout
-        uses: actions/checkout@v2.3.4 
- 
+        uses: actions/checkout@v2.3.4
+
       - name: Setup QEMU
         id: qemu
         uses: docker/setup-qemu-action@v1.2.0
-      
+
       - name: Setup Buildx
         id: buildx
         uses: docker/setup-buildx-action@v1
@@ -38,7 +38,7 @@ jobs:
             org.opencontainers.image.version=${{ env.BUILD_VERSION }}
             org.opencontainers.image.revision=${{ github.sha }}
             org.opencontainers.image.title=${{ github.repository }}
-            
+
       - name: GitHub login
         if: ${{ github.event_name != 'pull_request' }}
         uses: docker/login-action@v1.10.0