Merge pull request #863 from lightninglabs/docs-lnd

Update lnd documentation

Author: github-actions[bot]

docs/lnd/release-notes/release-notes-0.19.2.md

@@ -51,6 +51,9 @@
 
 ## Code Health
 
+- [Add Optional Migration](https://github.com/lightningnetwork/lnd/pull/9945)
+  which garbage collects the `decayed log` also known as `sphinxreplay.db`.
+
 ## Breaking Changes
 
 ## Performance Improvements

docs/lnd/release-notes/release-notes-0.20.0.md

@@ -131,6 +131,8 @@ circuit. The indices are only available for forwarding events saved after v0.20.
 
 ## Tooling and Documentation
 
+* lntest: [enable neutrino testing with bitcoind](https://github.com/lightningnetwork/lnd/pull/9977)
+
 # Contributors (Alphabetical Order)
 
 * Abdulkbk