checking using the html url

Author: ankit-ksh

docs/diploma_in_programming/books.md

@@ -2,7 +2,12 @@
 
 <!-- https://mozilla.github.io/pdf.js/web/viewer.html?file=https://raw.githubusercontent.com/bsc-iitm/books/master/docs/diploma_in_programming/books_name -->
 
-- [Concepts in Programming Languages by John C. Mitchell](Concepts in Programming Languages.pdf)
+<!-- - [Concepts in Programming Languages by John C. Mitchell](Concepts in Programming Languages.pdf)
 - [Java The Complete Reference Eleventh Edition Paperback by Herbert Schildt]("https://mozilla.github.io/pdf.js/web/viewer.html?file=https://raw.githubusercontent.com/bsc-iitm/books/master/docs/diploma_in_programming/Herbert%20Schildt%20-%20Java_%20The%20Complete%20Reference%2C%20Eleventh%20Edition.%2011-McGraw-Hill%20Education%20(2019).pdf")
 - [Effective Java Second Edition Paperback by Joshua Bloch](https://mozilla.github.io/pdf.js/web/viewer.html?file=https://raw.githubusercontent.com/bsc-iitm/books/master/docs/diploma_in_programming/Effective%20Java%20(2017,%20Addison-Wesley).pdf)
-- [Core Java - Vol 1 & 2, 11e Paperback by Cay S. Horstmann](https://mozilla.github.io/pdf.js/web/viewer.html?file=https://raw.githubusercontent.com/bsc-iitm/books/master/docs/diploma_in_programming/Core Java. Volume I 11th Edition - Fundamentals by Horstmann Cay S..pdf)
+- [Core Java - Vol 1 & 2, 11e Paperback by Cay S. Horstmann](https://mozilla.github.io/pdf.js/web/viewer.html?file=https://raw.githubusercontent.com/bsc-iitm/books/master/docs/diploma_in_programming/Core Java. Volume I 11th Edition - Fundamentals by Horstmann Cay S..pdf) -->
+
+- <a href="https://mozilla.github.io/pdf.js/web/viewer.html?file=https://raw.githubusercontent.com/bsc-iitm/books/master/docs/diploma_in_programming/Concepts in Programming Languages.pdf">Concepts in Programming Languages by John C. Mitchell</a>
+- <a href="https://mozilla.github.io/pdf.js/web/viewer.html?file=https://raw.githubusercontent.com/bsc-iitm/books/master/docs/diploma_in_programming/Herbert%20Schildt%20-%20Java_%20The%20Complete%20Reference%2C%20Eleventh%20Edition.%2011-McGraw-Hill%20Education%20(2019).pdf">Java The Complete Reference Eleventh Edition Paperback by Herbert Schildt</a>
+- <a href="https://mozilla.github.io/pdf.js/web/viewer.html?file=https://raw.githubusercontent.com/bsc-iitm/books/master/docs/diploma_in_programming/Effective%20Java%20(2017,%20Addison-Wesley).pdf">Effective Java Second Edition Paperback by Joshua Bloch</a>
+- <a href="https://mozilla.github.io/pdf.js/web/viewer.html?file=https://raw.githubusercontent.com/bsc-iitm/books/master/docs/diploma_in_programming/Core Java. Volume I 11th Edition - Fundamentals by Horstmann Cay S..pdf">Core Java - Vol 1 & 2, 11e Paperback by Cay S. Horstmann</a>