Adding MySQL book in Tamil language (#4565)

free-programming-books-ta.md

@@ -6,6 +6,7 @@
 * [HTML](#HTML)
 * [JavaScript](#Javascript)
 * [Machine Learning](#MachineLearning)
+* [MySQL](#MySQL)
 * [PHP](#PHP)
 
 
@@ -40,6 +41,11 @@
 * [எளிய தமிழில் ML](http://www.kaniyam.com/download/e0ae8ee0aeb3e0aebfe0aeaf-e0aea4e0aeaee0aebfe0aeb4e0aebfe0aeb2e0af8d-machine-learning-a4-pdf.html)
 
 
+### MySQL
+
+* [எளிய தமிழில் MySQL](http://www.kaniyam.com/mysql-book-in-tamil/)
+
+
 ### PHP
 
 * [எளிய தமிழில் PHP](https://freetamilebooks.com/ebooks/learn-php-in-tamil/)