f moar docs

Author: TheBlueMatt

lightning/src/ln/channelmanager.rs

@@ -584,7 +584,7 @@ pub type SimpleRefChannelManager<'a, 'b, 'c, 'd, 'e, 'f, 'g, 'h, M, T, F, L> = C
 ///
 /// Because it is an indication of trust, inbound channels which we've accepted as 0conf are
 /// exempted from the count of unfunded channels. Similarly, outbound channels and connections are
-/// never limited.
+/// never limited. Please ensure you limit the count of such channels yourself.
 ///
 /// Rather than using a plain ChannelManager, it is preferable to use either a SimpleArcChannelManager
 /// a SimpleRefChannelManager, for conciseness. See their documentation for more details, but