fix path

Author: jhendrixMSFT

sdk/resourcemanager/monitor/armmonitor/README.md

@@ -89,7 +89,7 @@ client, err := armmonitor.NewClient("subscriptionID", azfake.NewTokenCredential(
 
 - [Action Group](https://aka.ms/azsdk/go/mgmt/samples?path=sdk/resourcemanager/monitor/action_group)
 - [Activity Log Alert](https://aka.ms/azsdk/go/mgmt/samples?path=sdk/resourcemanager/monitor/activity_log_alert)
-- [Creating a Fake](/fake_example_test.go)
+- [Creating a Fake](./fake_example_test.go)
 - [Log Profile](https://aka.ms/azsdk/go/mgmt/samples?path=sdk/resourcemanager/monitor/log_profile)
 
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