2 Book License Add (#11478)

Author: IamNitinShukla

Diff for: books/free-programming-books-langs.md

@@ -2074,7 +2074,7 @@ Books on general-purpose programming that don't focus on a specific language are
 * [Think Complexity](https://greenteapress.com/wp/think-complexity-2e/) - Allen B. Downey (2nd Edition) (PDF, HTML)
 * [Think DSP - Digital Signal Processing in Python](https://greenteapress.com/wp/think-dsp/) - Allen B. Downey (PDF, HTML)
 * [Think Python 2nd Edition](https://greenteapress.com/wp/think-python-2e/) - Allen B. Downey (3.x) (HTML, PDF) (CC BY-NC)
-    * [Think Python First Edition](https://greenteapress.com/wp/think-python/) - Allen B. Downey (2.x) (HTML, PDF)
+    * [Think Python First Edition](https://greenteapress.com/wp/think-python/) - Allen B. Downey (2.x) (HTML, PDF) (CC BY-NC)
 * [Tiny Python 3.6 Notebook](https://github.com/mattharrison/Tiny-Python-3.6-Notebook) - Matt Harrison (3.6)
 * [Tiny Python Projects](http://tinypythonprojects.com/Tiny_Python_Projects.pdf) - Ken Youens-Clark(PDF)
 * [Web2py: Complete Reference Manual, 6th Edition (pre-release)](http://web2py.com/book) (2.5 - 2.x)
@@ -2210,7 +2210,7 @@ Books on general-purpose programming that don't focus on a specific language are
 
 * [Metagenomics](https://kyclark.gitbooks.io/metagenomics) - Ken Youens-Clark
 * [Perl 6 at a Glance](https://andrewshitov.com/wp-content/uploads/2020/01/Perl-6-at-a-Glance.pdf) - Andrew Shitov (PDF)
-* [Raku Guide](https://raku.guide) (HTML) [(PDF)](https://github.com/hankache/rakuguide)
+* [Raku Guide](https://raku.guide) (HTML) [(PDF)](https://github.com/hankache/rakuguide) (CC BY-SA)
 * [Raku One-Liners](https://andrewshitov.com/wp-content/uploads/2020/01/Raku-One-Liners.pdf) - Andrew Shitov (PDF)
 * [Raku Programming](https://en.wikibooks.org/wiki/Raku_Programming) - Wikibooks (HTML)
 * [Think Raku](https://github.com/LaurentRosenfeld/think_raku/raw/master/PDF/think_raku.pdf) - Laurent Rosenfeld, Allen B. Downey (PDF)