Updated the Terraform Snippet Generator Code and Other Minor Changes

[mrpjl]

@memoryleak

• Updated the Terraform Registry Link.
• Updated the XPATH to fetch the terraform snippets.
• Added small snippet to click on every dropdown before scraping snippet.
• Minor Correction in README file and updated the selenium version used for scraping.

Able to scrap most of the terraform snipptets perfectly, but for some of the pages clean snippet cannot be scraped due to inconsistency in the page.