Update README.md

[G2G2G2G]

this error happens without the comma:

./fiber.go:15:18: syntax error: unexpected newline, expecting comma or }

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[Fenny]

Nice catch, by any chance you could also fix the other README's (languages)?

[G2G2G2G]

I don't know how to get to other languages, I also updated the "fiber/docs" area though

[renanbastos93]

Nice catch, by any chance you could also fix the other README's (languages)?

Which others readme file to change? He changes only the middleware readme file. seems right to me.

[G2G2G2G]

gofiber/docs#134
This is the only other one I found (well I found the above one first actually) then searched for it again and found the readme.md I edited here.
If any others exist I don't know how to get to them, I edit through github and use google syntax to search for it though so it's pretty bad LOL
(also anyone is welcome to reject my pull request & change the file themselves, my githubs are usually throwaway accounts)

[Fenny]

@G2G2G2G my bad, I miss-read the filename 😭 I thought it was the original README.md, sorry!

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