fix(10): improve correctness of sentence
fix(10): improve correctness of sentence

By adding color_point.to_point to the code example
leanprover/tutorial,Hodapp87/cs6460_project,fpvandoorn/tutorial,leanprover/tutorial,soonhokong/lean-tutorial,avigad/tutorial,leanprover/tutorial,fpvandoorn/tutorial,soonhokong/lean-tutorial,avigad/tutorial,soonhokong/lean-tutorial,fpvandoorn/tutorial,avigad/tutorial,Hodapp87/cs6460_project,Hodapp87/cs6460_project