README-en.md edited online with Bitbucket

README-en.md

@@ -135,7 +135,7 @@ Values by default can be assigned to the parameters of the functions starting fr
 
 **Examples of Function Headers and Valid Function Calls:**
 
-1. **Headers:** `int example(int var1, float var2, int var3 = 10)`
+1. **Header:** `int example(int var1, float var2, int var3 = 10)`
 
     **Calls:**