fix: update example dep override to have reviver

Author: Nexushunter

example/pubspec.yaml

@@ -27,7 +27,11 @@ dependency_overrides:
     path: ../openapi-generator
   openapi_generator_cli:
     path: ../openapi-generator-cli
-
+  source_gen:
+    git:
+      ref: reviver
+      url: https://github.com/Nexushunter/source_gen
+      path: source_gen
 
 # Dependencies specify other packages that your package needs in order to work.
 # To automatically upgrade your package dependencies to the latest versions