Update README.md

Author: KwokHing

README.md

@@ -1,8 +1,7 @@
-## Automating Infrastructure on Google Cloud with Terraform: Challenge Lab (GSP345)
+## Automating Infrastructure on Google Cloud with Terraform: Challenge Lab (GSP345) ##
 
-====================== Setup : Create the configuration files ======================
+Setup : Create the configuration files
 Make the empty files and directories in Cloud Shell or the Cloud Shell Editor.
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 ```
 touch main.tf