docs: add release notes.

Signed-off-by: Nishant Bansal <[email protected]>

docs/release-notes/release-notes-0.19.0.md

@@ -111,6 +111,13 @@
   now update the channel policy if the edge was not found in the graph
   database if the `create_missing_edge` flag is set.
 
+* [Added](https://github.com/lightningnetwork/lnd/pull/9390) `scid_str`, a 
+  string representation of `chan_id` in the format 
+  (`block x transaction x output`). This update replaces `chan_id` with `scid`, 
+  `channel_point` with `chan_point`, and includes `chan_id` to align with the 
+  BOLT-2 Peer Protocol specification for standardized channel identification in 
+  the `lncli listchannels` output.
+
 # Improvements
 ## Functional Updates
 
@@ -274,6 +281,7 @@ The underlying functionality between those two options remain the same.
 * hieblmi
 * Jesse de Wit
 * Keagan McClelland
+* Nishant Bansal
 * Oliver Gugger
 * Pins
 * Viktor Tigerström