rename gh actions steps

Author: aerispaha

.github/workflows/python-app.yml

@@ -1,7 +1,7 @@
 # This workflow will install Python dependencies, run tests and lint with a single version of Python
 # For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
 
-name: Python application
+name: CI Tests
 
 on:
   push:
@@ -13,7 +13,7 @@ permissions:
   contents: read
 
 jobs:
-  example_matrix:
+  ci_matrix:
     strategy:
       matrix:
         python_version: [3.7, 3.8, 3.9, "3.10"]