Updated syntax of yml

.github/workflows/cool-pipeline.yml

@@ -3,24 +3,22 @@ on:
   push:
     branches:
     - main
-    pull_request:
-      branches:
-      -main
+  pull_request:
+    branches:
+    - main
 jobs:
-test:
-runs-on: ubuntu-latest
-steps:
- runs-on: ubuntu-latest
- steps:
- - uses: actions/checkout@v3
- - name: Use Node.js 18.x
-   uses: actions/setup-node@v3
-   with:
+ test:
+  runs-on: ubuntu-latest
+  steps:
+  - uses: actions/checkout@v3
+  - name: Use Node.js 18.x
+    uses: actions/setup-node@v3
+    with:
      node-version: "18"
--name: Pretend to build
- run: echo Pretending to build some kind of app...
--name: Push artifact foo.txt
- uses: actions/upload-artifact@v3
- with:
-   name: my-artifact
-   path: foo.txt
+  - name: Pretend to build 
+    run: echo Pretending to build some kind of app...
+  - name: Push artifact foo.txt
+    uses: actions/upload-artifact@v3
+    with:
+     name: my-artifact
+     path: foo.txt