searx: Rewrite url from /searx to /searx/
The library that the Android app is using seems to be stripping off the / at the end though we have /searx/ in the manifest file. Also helps users who might access Searx by appending /searx to the url in the browser.
It's basically the same rewrite rule as Syncthing. Tested.
Signed-off-by: Joseph Nuthalapati njoseph@thoughtworks.com