Fix typo cpp 104 index (#4520)

src/data/roadmaps/cpp/content/104-data-types/index.md

@@ -85,7 +85,7 @@ int& numRef = num;
 User-defined data types are types that are defined by the programmer, such as structures, classes, and unions.
 
 ## Structures (struct)
-Structures are used to store different data tyes under a single variable and accessibility of member variables and methods are public.
+Structures are used to store different data types under a single variable and accessibility of member variables and methods are public.
 
 Example:
 ```cpp