docs: Added release note

Signed-off-by: Ononiwu Maureen <[email protected]>

docs/release-notes/release-notes-0.18.1.md

@@ -26,12 +26,20 @@
 # New Features
 ## Functional Enhancements
 ## RPC Additions
+
+* [Added unbanPeer RPC](https://github.com/lightningnetwork/lnd/pull/7606/).
+  This would enable unbanning and connecting to a previously banned peer.
+
 ## lncli Additions
 
 * [Added](https://github.com/lightningnetwork/lnd/pull/8491) the `cltv_expiry`
   argument to `addinvoice` and `addholdinvoice`, allowing users to set the
   `min_final_cltv_expiry_delta`
 
+* [Added unbanPeer command](https://github.com/lightningnetwork/lnd/pull/7606/). 
+  This would enable unbanning and connecting to a previously banned peer using 
+  the lncli command.
+
 # Improvements
 ## Functional Updates
 ## RPC Updates