Try fix error when evaluating 'runs-on' for job 'test' in Github Actions

Author: weiji14

.github/workflows/ci_tests.yaml

@@ -25,16 +25,15 @@ on:
 
 jobs:
   test:
-    name: ${{ matrix.os }} - Python ${{ matrix.python-version }} / NumPy ${{ matrix.numpy-version }}
+    name: ${{ matrix.os }} - Python ${{ matrix.python-version }} - NumPy ${{ matrix.numpy-version }}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
         python-version: [3.7, 3.9]
         os: [ubuntu-latest, macOS-latest, windows-latest]
         # Is it a draft Pull Request (true or false)?
-        isDraft:
-          - ${{ github.event.pull_request.draft }}
+        isDraft: ${{ github.event.pull_request.draft }}
         # Only run one job (Ubuntu + Python 3.9) for draft PRs
         exclude:
           - os: macOS-latest