doc: add note for remote lnd credentials

Author: GeorgeTsagk

doc/config-lnd-remote.md

@@ -40,6 +40,10 @@ remote.lnd.macaroonpath=/some/folder/with/lnd/data/admin.macaroon
 remote.lnd.tlscertpath=/some/folder/with/lnd/data/tls.cert
 ```
 
+> NOTE: It is highly recommended to not place the LND connection credentials
+inside the terminal home directory (`~/.lit/`) as `litd` may overwrite some of
+these files.
+
 Run LiT:
 
 ```shell