Hi, change looks good. Can you also make the same edit in README.md? Thanks!

Thanks for submitting all these changes! They were very good.

Since I don't want top post a comment for every instance of this error I'll post here: the changes where you change "an" to "a" before words like "rvalue" are actually incorrect changes. The reason for this is because you don't use "a" before words that have vowel sounds at the beginning of their pronunciation. For example, "rvalue" sounds like "are value" when you say it aloud, and since "are" begins with a vowel it should be proceeded by "an". See here or here. Same reasoning applies to "lvalue" because it's pronounced as "elle value".

Fixed. Today I definitely learned something new.