standardize yaml format

Signed-off-by: shubhindia <shubhindia123@gmail.com>

README.md

@@ -72,20 +72,16 @@ jobs:
   docker:
     runs-on: ubuntu-latest
     steps:
-      -
-        name: Set up QEMU
+      - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
-      -
-        name: Set up Docker Buildx
+      - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
-      -
-        name: Login to Docker Hub
+      - name: Login to Docker Hub
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
-      -
-        name: Build and push
+      - name: Build and push
         uses: docker/build-push-action@v4
         with:
           push: true
@@ -104,13 +100,11 @@ expression `{{defaultContext}}`. Here we can use it to provide a subdirectory
 to the default Git context:
 
 ```yaml
-      -
         # Setting up Docker Buildx with docker-container driver is required
         # at the moment to be able to use a subdirectory with Git context
-        name: Set up Docker Buildx
+      - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
-      -
-        name: Build and push
+      - name: Build and push
         uses: docker/build-push-action@v4
         with:
           context: "{{defaultContext}}:mysubdir"
@@ -132,8 +126,7 @@ private repository, you have to use a [secret](https://docs.docker.com/build/ci/
 named `GIT_AUTH_TOKEN` to be able to authenticate against it with Buildx:
 
 ```yaml
-      -
-        name: Build and push
+      - name: Build and push
         uses: docker/build-push-action@v4
         with:
           push: true
@@ -156,23 +149,18 @@ jobs:
   docker:
     runs-on: ubuntu-latest
     steps:
-      -
-        name: Checkout
+      - name: Checkout
         uses: actions/checkout@v3
-      -
-        name: Set up QEMU
+      - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
-      -
-        name: Set up Docker Buildx
+      - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
-      -
-        name: Login to Docker Hub
+      - name: Login to Docker Hub
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
-      -
-        name: Build and push
+      - name: Build and push
         uses: docker/build-push-action@v4
         with:
           context: .