Confusing use of `client` and `server`

[Dave Tonge]

https://bitbucket.org/openid/fapi/annotate/d4edc14c0b76155c97623edb521bfdc56afd64b7/Financial_API_WD_001.md?at=master&fileviewer=file-view-default#Financial_API_WD_001.md-252

shall send the x-fapi-InteractionId with the value set to the one received from the client in the x-fapi-InteractionId request header or a [RFC4122] UUID value created by the server if there was no corresponding request header to track the interaction, e.g., x-fapi-InteractionId: c770aef3-6784-41f7-8e0e-ff5f97bddb3a; and

I suggest that this sentence is reworded to make it clear which client and server are being referred to.

[Nat Sakimura]

Sascha will try to come up with better wording.

[Sascha Preibisch]

Please review the pull request and close the ticket if you are fine with the new text.

[Nat Sakimura]

Resolved by the text provided by Sascha