doc: add warning for socket.connect reuse

PR-URL: https://github.com/nodejs/node/pull/33204
Refs: https://github.com/nodejs/node/issues/25969
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

doc/api/net.md

@@ -600,6 +600,10 @@ the error passed to the [`'error'`][] listener.
 The last parameter `connectListener`, if supplied, will be added as a listener
 for the [`'connect'`][] event **once**.
 
+This function should only be used for reconnecting a socket after
+`'close'` has been emitted or otherwise it may lead to undefined
+behavior.
+
 #### `socket.connect(options[, connectListener])`
 <!-- YAML
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