selfdrive/car/gm/interface.py: fix typo in comment (#23429)

spelling

selfdrive/car/gm/interface.py

@@ -46,7 +46,7 @@ class CarInterface(CarInterfaceBase):
 
     # These cars have been put into dashcam only due to both a lack of users and test coverage.
     # These cars likely still work fine. Once a user confirms each car works and a test route is
-    # added to selfdrive/test/test_routes, we canr remove it from this list.
+    # added to selfdrive/test/test_routes, we can remove it from this list.
     ret.dashcamOnly = candidate in {CAR.CADILLAC_ATS, CAR.HOLDEN_ASTRA, CAR.MALIBU}
 
     # Presence of a camera on the object bus is ok.