Remove Russian and/or Spanish accents from documentation :P

I tried to correct:
```
`return` or `pure` function with one argument, try takes a context value from dynamic scope collected
internaly by `bind` function, so that, you can not use them with one argument out of `bind` context.
````
... but I couldn't figure out what that meant at all.

I've made some guesses as to what was meant in a few places, you should be able to see if I didn't understand correctly I think. 

And lastly, a general pointer on English: "another" and "an other" are two different things. See my changes :P