docs: move 0.15.1 release notes item

docs/release-notes/release-notes-0.15.0.md

@@ -70,11 +70,7 @@ releases. Backward compatibility is not guaranteed!
 * A new [`constrainmacaroon` command was
   added](https://github.com/lightningnetwork/lnd/pull/6529) that allows
   caveats/restrictions to be added to an existing macaroon (instead of needing
-  to bake a new one). 
-
-* [Hop hints are now opt in when using `lncli
-  addholdinvoice`](https://github.com/lightningnetwork/lnd/pull/6577). Users now
-  need to explicitly specify the `--private` flag.
+  to bake a new one).
 
 ## Neutrino
 

docs/release-notes/release-notes-0.15.1.md

@@ -11,6 +11,10 @@
 * [Add `payment_addr` flag to `buildroute`](https://github.com/lightningnetwork/lnd/pull/6576)
   so that the mpp record of the route can be set correctly.
 
+* [Hop hints are now opt in when using `lncli
+  addholdinvoice`](https://github.com/lightningnetwork/lnd/pull/6577). Users now
+  need to explicitly specify the `--private` flag.
+
 ## Documentation
 
 * [Add minor comment](https://github.com/lightningnetwork/lnd/pull/6559) on