Fix typo

Author: jgray-19

.github/workflows/test-pymadng.yml

@@ -34,7 +34,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         python -m pip install .
-        python -m pip instal tfs-pandas
+        python -m pip install tfs-pandas
     - name: Test with python
       run: |
         python -m unittest tests/*