docs: Update README.md (#776)

* Update README.md

Setup > Step Number 2: Cloning of Git repository - update the link for the repository to be cloned with a valid URL = https://github.com/terraform-google-modules/terraform-docs-samples.git

* Remove link in command line doc

---------

Co-authored-by: Katie McLaughlin <katie@glasnt.com>

Author: arnoldmashava

README.md

@@ -22,7 +22,7 @@ authenticates Terraform, letting you get started with less setup.
 
 1. Clone this repository:
 
-   git clone https://github.com/GoogleCloudPlatform/terraform-docs-samples.git
+    `git clone https://github.com/terraform-google-modules/terraform-docs-samples`
 
 ## How to run a sample