Update get_links.py

[mikeysan]

Description

Updated script to accept input without requiring the user to type "https" or "http". I also set the output to be saved in a file instead of standard output. The file is appended to.

Fixes #(issue_no)

Replace issue_no in the above line with the issue related to this PR.

Type of change

Choosing one or more options from the following as per the nature of your Pull request.

• Bug fix (non-breaking change which fixes an issue)
• [x ] New feature (non-breaking change which adds functionality)
• Documentation Update

Checklist:

Please tick all the boxes that are fulfilled by your Pull request

• I have named my files and folder according to this project's guidelines
• [x ] My code follows the style guidelines of this project
• [ x] I have commented my code, particularly in hard-to-understand areas
• I have created a helpful and easy to understand README.md
• I have included a requirements.txt file(if external libraries are required)
• My changes don't produce any warnings.
• I have added a working sample/screenshot of the script

[AdityaJ7]

Nice addition @mikeysan