solving issue #4151
solving issue #4151

https://github.com/FreeCodeCamp/FreeCodeCamp/issues/4151 
on line 226 "becoming" should "become" .
BhaveshSGupta/FreeCodeCamp,BhaveshSGupta/FreeCodeCamp,otavioarc/freeCodeCamp,HKuz/FreeCodeCamp,jonathanihm/freeCodeCamp,raisedadead/FreeCodeCamp,pahosler/freecodecamp,HKuz/FreeCodeCamp,raisedadead/FreeCodeCamp,FreeCodeCamp/FreeCodeCamp,otavioarc/freeCodeCamp,BhaveshSGupta/FreeCodeCamp,FreeCodeCamp/FreeCodeCamp,pahosler/freecodecamp,jonathanihm/freeCodeCamp