Code example fix

[nairihar]

Thanks for the nice library, just some minor fixes which I noticed when reading the documentation.

Line 65 add async function for await otherwise, it will not work.
Line 68 add quotes.
Line 366 throws error and server exit when the client sends a request. There is no need for next() function.

[artakvg]

Thanks @nairihar jan for comments.
For the first 2 - I am ok with fixes.
For the 3-d one (removing next) I don't agree.
Think we should allow to run next() even if we send reply. @davidharutyunyan ?

[nairihar]

But there is an error when you calling next() function

[nairihar]

I added back next function call instead I added the second handler for the same channel.
Also fixed spaces.

[davidharutyunyan]

now it's ok.