Update free-courses-ml.md to include html css tutorial

[noraegeorge]

What does this PR do?

Add resource to include a course of website (HTML, CSS and web design) for beginners in malayalam language

IMPORTANT

• [ x] Read our contributing guidelines.
• [ x] Is this a revision of a previously submitted PR? If so, STOP! Go back, reopen the PR, and add commit(s) the branch you previously submitted. Please don't make the job of reviewing more difficult by hiding previous work.

For resources

Description

Add one resource for html and css training course for beginners

Why is this valuable (or not)?

This course talks not only about html and css but also provides info on SEO, website design. It provides a full picture on web site creation.

How do we know it's really free?

Link to youtube view uploaded by the author

For book lists, is it a book? For course lists, is it a course? etc.

course

Checklist:

• [ x ] Search for duplicates.
• [ x ] Include author(s) and platform where appropriate.
• [ x ] Put lists in alphabetical order, correct spacing.
• [ x ] Add needed indications (PDF, access notes, under construction).
• [ x ] Used an informative name for this pull request.

Follow-up

• Check the status of GitHub Actions and resolve any reported warnings!

[noraegeorge]

please accept another contribution from my side