Update environment variable scope

README.md

@@ -79,11 +79,15 @@ Some environment variables may be necessary for your particular case or to impro
 
 Example usage:
 ```
+build:
+  runs-on: ubuntu-latest
+  env:
+    DOTNET_NOLOGO: true
+  steps:
+    - uses: actions/checkout@master
     - uses: actions/setup-dotnet@v1
       with:
         dotnet-version: '3.1.100' # SDK Version to use.
-  env:
-    DOTNET_NOLOGO: true
 ```
 
 # License