Fix example deps installation

Author: echarles

.github/workflows/main.yml

@@ -28,7 +28,7 @@ jobs:
         pytest
     - name: Install the Python dependencies for the examples
       run: |
-        cd examples/simple && pip install -e '3.5
+        cd examples/simple && pip install -e .
     - name: Run the tests for the examples
       run: |
         pytest examples/simple/tests/*