* Fix 'Reinforcement learning' broken link

Change the old google drive link to the new finished draft for the Reinforcement learning book

* Change url form

* Add three CC-BY-SA licensed, Ada's PDF resources

* Update free-programming-books.md

* Add Java Web Scraping handbook

* Remove trailing '/' on Java Web Scraping handbook

* remove defunct links

* Update free-programming-books.md

* Misc category cleanup

* Fix

* Removed the CS For All book

It's just a set of problems and the textbook is no longer available for free online.

* New books from the Syncfusion's Succinctly series

* Fix

* More books

* Cleanup

* Fixes

* One more fix

* O'Reilly cleanup

* Added the missing PDF annotation

* New MIT Open Access books

* Alphabetic fix

* Update a Java book URL - #2990

Changes:
- The book 'Object-Oriented vs. Functional Programming' has a .csp link
- Also a sign-up is required to read the book since it's hosted at oreilly.com
- The contributing guide is against a hosting service and required sign-up.
- That is why this PR is created.

* remove ? link
Co-authored-by: NEric Hellman <eric@hellman.net>

* added spring data reference

* satisfy linter
Co-authored-by: NEric Hellman <eric@hellman.net>

* Fixed non-working links

* Newline fix

* Fixed a link missing https://