fix(guide): simplify directory structure

guide/spanish/cplusplus/range-for-loop/index.md

@@ -0,0 +1,30 @@
+---
+title: Range For Loop
+localeTitle: Rango de bucle
+---
+## Rango basado en bucle
+
+El bucle `for` basado en rangos permite un bucle fácil en una gama de elementos (elementos similares en un contenedor).
+
+Con tradicional `for` bucle:
+
+```cpp
+std::vector<std::string> stringList {"one", "two", "three"}; 
+ 
+ for (size_t il; il < stringList.size(); il++ 
+ { 
+  std::cout << stringList.at(il) << std::endl; 
+ } 
+```
+
+Con rango basado `for` bucle:
+
+```cpp
+std::vector<std::string> stringList {"one", "two", "three"}; 
+ 
+ for (auto& singleString : stringList) 
+ { 
+  std:cout << singleString << std::endl; 
+ } 
+
+```