Invalid IP address from interactive docs

Hi there!

I just noticed that the requests generated by the "Try Me" button in our docs is generating a request to our backend, coming from the IP address " 54.164.51.35".

That is, there is a space in front of your IP address, which should not be there.

I'm imagining that this is a bug somewhere in your TCP stack, however since I can't intercept the raw IP packets it's hard to dig any deeper.

We are using the cors proxy feature (that's on by default).

Not hard to work around on my end, but could be fun to track down on yours!