docs: fix links in README.md for contributing guidelines and script references (#257)

[YousefSedik]

PR Title

fix script reference links

Summary

summary... updated the reference links for scripts in README.md

Description

updated the reference links for scripts in README.md since they were broken

The changes are as follows:

• updated reference links for scripts

Checks

in the repository

• [x] Made no changes that degrades the functioning of the repository
• [x] Gave each commit a better title (unlike updated README.md)

in the PR

• [x] Followed the format of the pull_request_template
• [x] Made the Pull Request in a small level (for the creator's wellfare)
• [x] Tested the changes you made

Thank You,

Yousef Sedik