[electrophysiology_uploader] Minor translation typo

[jeffersoncasimir]

Minor typo found in the electrophysiology_uploader looks slightly jarring.

There is missing a space after the colon (highlighted) in the warning message at the top:

I personally think "Emplacement du téléversement* sounds more natural, but this is likely another one of those.

Clicking on either of these links on the test VM will redirect to a page with the content:

{"error":"File not found."}

This could potentially also be translated