Fix metadata build in tutorial.md (#43)

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docs/tutorial.md

@@ -1,7 +1,3 @@
----
-tags: - Great Expectations
----
-
 # How to Use Great Expectations with Prefect 
 
 This guide will help you use [Great Expectations](https://greatexpectations.io/) with [Prefect](https://prefect.io/).
@@ -206,4 +202,4 @@ Prefect [deployments](https://docs.prefect.io/latest/concepts/deployments/) allo
 
 There's lots more to explore for additional observability and orchestration with [Prefect](https://docs.prefect.io/latest/).
 
-Happy engineering!
+Happy engineering!