Correct name of workflow step for setting up Node.js

The version number is clearly shown in the action input, so there is no need to specify it in the step name.

Author: per1234

.github/workflows/test-typescript-task.yml

@@ -47,7 +47,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
-      - name: Set Node.js 10.x
+      - name: Setup Node.js
         uses: actions/setup-node@v2
         with:
           node-version: 12.x