improved command description

mautrix_signal/commands/auth.py

@@ -194,11 +194,11 @@ async def list_devices(evt: CommandEvent) -> None:
     needs_auth=True,
     management_only=True,
     help_section=SECTION_AUTH,
-    help_text="Add a linked device",
+    help_text="Add a device by scanning the QR-Code of the device and extracting the link (sgnl://linkdevice?..)",
 )
 async def add_linked_device(evt: CommandEvent) -> EventID:
     if len(evt.args) == 0:
-        return await evt.reply("**Usage:** `$cmdprefix+sp add-linked-device <link from QR-Code>`")
+        return await evt.reply("**Usage:** `$cmdprefix+sp add-linked-device <signl://linkdevice?..>`")
     uri = evt.args[0]
     try:
         await evt.bridge.signal.add_linked_device(evt.sender.username, uri)