Fix typo

README.md

@@ -6,7 +6,7 @@ This list initially was a clone of [stackoverflow - List of Freely Available Pro
 
 Moved to GitHub for collaborative updating and for the site mentioned above.
 
-### NEW : Search inside free-programming-books.md (and whole lot more of learning resources)
+### NEW : Search inside free-programming-books.md (and a whole lot more of learning resources)
 [resrc.io/search](http://resrc.io/search/)
 
 ### How To Contribute