Update README.md

Author: nolongerwait

README.md

@@ -1,4 +1,4 @@
 # Learn-C-Primer
 How to learn C++ Primer 5th Edition 
 
-See [Main.md](Learn-C-Primer/Main.md)
+See [Main.md](https://github.com/nolongerwait/Learn-C-Primer/blob/master/Main.md)