Now snippet for for looks like that:

for index := 0; index < count; index++ { } 

but in most languages and in Go too, using i instead of index is a convention:

for i := 0; i < count; i++ { } 

for example, this is recommended here https://talks.golang.org/2014/names.slide#6
What do you think about it? I'll be happy to make a Pull Request 🙂