Update compile-sketch.yml

Author: PaulZC

.github/workflows/compile-sketch.yml

@@ -97,7 +97,7 @@ jobs:
           platforms: ${{ matrix.board.platforms }}
           fqbn: ${{ matrix.board.fqbn }}
           libraries: |
-            - source-url: https://github.com/tree/AssistNow.git
+            - source-url: https://github.com/${{github.repository}}/tree/AssistNow.git
           sketch-paths: |
             - examples/Example10_AltitudeMSL
             - examples/Example11_ResetModule/Example1_FactoryDefaultviaI2C