fix: trim slash from url for the mobile app

[Mxrk]

Hi, small pull request to fix the removal of the slash at the end of a server address on mobile.

It was mentioned in #311 and I used the same code as in the linked code by @MohamedBassem.

Extension:

hoarder/apps/browser-extension/src/NotConfiguredPage.tsx

Line 25 in 809a9bc

setSettings((s) => ({ ...s, address: serverAddress.replace(/\/$/, "") }));

[MohamedBassem]

Thanks @Mxrk for the fix!