fix path

Author: jhendrixMSFT

sdk/resourcemanager/resourcegraph/armresourcegraph/README.md

@@ -85,7 +85,7 @@ client, err := armresourcegraph.NewClient("subscriptionID", azfake.NewTokenCrede
 })
 ```
 
-See [creating a fake](/fake_example_test.go) for a complete example.
+See [creating a fake](./fake_example_test.go) for a complete example.
 
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