Update README.md

README.md

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 # Welcome to: Module 4: Configure Keda Using Http Metrics & Open Service Mesh and Testing with Azure Load Testing
 
 ### Install KEDA
-```
+
 * Execute the following
+```
 az aks enable-addons --addons open-service-mesh -g 'resource_group' -n 'aks_cluster-name'
 
 az aks show -g 'resource_group' -n 'aks_cluster-name'  --query 'addonProfiles.openServiceMesh.enabled'