[docs] Rename a variable count_value to countValue in the Stores section

[nazar-lazarchuk]

To me, not a native English speaker, the name of the variable counter looks a little better in the "Stores" section because it keeps the value of the counter (not the "count" function, as I thought when I first read documentation).

I also think it's better to use camelCase instead of snake_case for variables, so I have replaced count_value to counterValue in some lines.
snake_case code style is used in a few more places, so in my opinion, it would be good to correct it as well.

I will be happy to discuss this pull request

[benmccann]

changing from snake_case to camelCase definitely seems like a good change to me

i'm ambivalent on the variable name. either one seems fine to me

I think changing the text from "The count is" to "The counter is" doesn't read as well

[nazar-lazarchuk]

changing from snake_case to camelCase definitely seems like a good change to me

i'm ambivalent on the variable name. either one seems fine to me

I think changing the text from "The count is" to "The counter is" doesn't read as well

Okay, then I think it's better to do revert count, but keep camelCase here and in another docs sections.
What do you think?

[benmccann]

Sounds fine to me

[Rich-Harris]

Yep, I would prefer we keep the variable as count. The store should be named for the thing itself — you'd have $theme rather than $themer and $enabled rather than $enabler, and this is no different. 'count' here is being used as a noun rather than a verb

[nazar-lazarchuk]

Guys, so I left only renaming count_value to countValue.
If you don't mind I will rename snake_case to camelCase in other docs in the new PR's