dms.receive: minor tweak, use fallback for user_link

dms.py

@@ -161,7 +161,7 @@ def reply(text, type=None):
 
         # send the DM request!
         maybe_send(from_proto=from_proto, to_user=to_user, type='request_bridging', text=f"""\
-<p>Hi! {from_user.user_link(proto=to_proto)} is using Bridgy Fed to bridge their account from {from_proto.PHRASE} into {to_proto.PHRASE}, and they'd like to follow you. You can bridge your account into {from_proto.PHRASE} by following this account. <a href="https://fed.brid.gy/docs">See the docs</a> for more information.
+<p>Hi! {from_user.user_link(proto=to_proto, proto_fallback=True)} is using Bridgy Fed to bridge their account from {from_proto.PHRASE} into {to_proto.PHRASE}, and they'd like to follow you. You can bridge your account into {from_proto.PHRASE} by following this account. <a href="https://fed.brid.gy/docs">See the docs</a> for more information.
 <p>If you do nothing, your account won't be bridged, and users on {from_proto.PHRASE} won't be able to see or interact with you.
 <p>Bridgy Fed will only send you this message once.""")
         return reply(f"Got it! We'll send {to_user.user_link()} a message and say that you hope they'll enable the bridge. Fingers crossed!")