Revise lab description and streamline content

Updated the description of the lab and removed redundant sections.

Author: staleycyn

Instructions/Exercises/M03-Unit 5 Provision an ExpressRoute circuit.md

@@ -1,17 +1,15 @@
----
-lab:
-  title: M03-Unit 5 Provision an ExpressRoute circuit
-  description: In this exercise, you will create an ExpressRoute circuit using the
-    Azure portal and the Azure Resource Manager deployment model.
-  duration: 15 minutes
-  level: 300
-  islab: true
-  primarytopics:
-  - Azure
-  - Azure Portal
-  - Azure Resource Manager
----
-
+---
+lab:
+  title: M03-Unit 5 Provision an ExpressRoute circuit
+  description: Create and configure an ExpressRoute circuit.
+  duration: 15 minutes
+  level: 300
+  islab: true
+  primarytopics:
+  - Azure
+  - ExpressRoute
+---
+
 # M03-Unit 5 Provision an ExpressRoute circuit
 
 ## Exercise scenario
@@ -149,3 +147,4 @@ Congratulations on completing the lab. Here are the main takeaways for this lab.
 
 
 
+