Use standardized workflow/job/step names in "Check License" workflow

These are the naming conventions established in the standardized template workflow.

.github/workflows/check-license.yml

@@ -1,4 +1,4 @@
-name: Check license
+name: Check License
 
 env:
   EXPECTED_LICENSE_FILENAME: LICENSE.txt
@@ -26,14 +26,15 @@ on:
       - "[pP][aA][tT][eE][nN][tT][sS]*"
 
 jobs:
-  check:
+  check-license:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Checkout local repository
+      - name: Checkout repository
         uses: actions/checkout@v2
 
-      - uses: ruby/setup-ruby@v1
+      - name: Install Ruby
+        uses: ruby/setup-ruby@v1
         with:
           ruby-version: ruby # Install latest version