Replace C with C/C++

This looks like a constant `C` because it is highlighted in backticks.
This PR will clarify it by removing the backticks and replacing it with C/C++.

Author: koic

src/flow_control/match/destructuring/destructure_pointers.md

@@ -2,7 +2,7 @@
 
 For pointers, a distinction needs to be made between destructuring
 and dereferencing as they are different concepts which are used
-differently from a language like `C`.
+differently from languages like C/C++.
 
  * Dereferencing uses `*`
  * Destructuring uses `&`, `ref`, and `ref mut`