Format markdown (#1368)

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docs/eventing/event-registry.md

@@ -269,8 +269,7 @@ the next topic: How do we actually populate the registry in the first place?
   When you `kubectl apply` this yaml, the KafkaSource `kafka-source-sample` will
   be instantiated, and two EventTypes will be added to the registry (as there
   are two topics). You can see that in the registry example output from the
-  previous sections.  
-
+  previous sections.
 
 ## What's next
 

docs/serving/using-a-tls-cert.md

@@ -179,7 +179,6 @@ Kubernetes secret and then configure the `knative-ingress-gateway`:
       configuration:
 
       ```yaml
-
       ---
       tls:
         mode: SIMPLE