Standize C++ Headings (#5275)

more/free-programming-cheatsheets.md

@@ -3,7 +3,7 @@
 * [Artificial Intelligence](#artificial-intelligence)
 * [Bash](#bash)
 * [C](#C)
-* [C++](#c-1)
+* [C++](#cpp)
 * [Clojure](#clojure)
 * [Data Science](#data-science)
 * [Git](#git)
@@ -38,7 +38,7 @@
 * [The C Cheat Sheet: An Introduction to Programming in C](https://sites.ualberta.ca/~ygu/courses/geoph624/codes/C.CheatSheet.pdf) - Andrew Sterian (PDF)
 
 
-### C++
+<h3 id="cpp">C++</h3>
 
 * [C++ Quick Reference](https://www.hoomanb.com/cs/quickref/CppQuickRef.pdf) (PDF)
 

more/free-programming-interactive-tutorials-en.md

@@ -5,7 +5,7 @@
 * [Bash](#bash)
 * [C](#c)
 * [C#](#c-sharp)
-* [C++](#c-1)
+* [C++](#cpp)
 * [Clojure](#clojure)
 * [Cloud Computing](#cloud-computing)
 * [CoffeeScript](#coffeescript)
@@ -71,7 +71,7 @@
 * [Learn C#](https://www.codecademy.com/learn/learn-c-sharp) - Codecademy
 
 
-### C++
+<h3 id="cpp">C++</h3>
 
 * [C++ Tutorial](https://www.w3schools.com/cpp) - W3Schools
 * [CppKoans](https://github.com/torbjoernk/CppKoans)