Remove redundant empty lines

Author: gitbuda

pages/release-notes.mdx

@@ -272,7 +272,6 @@ labeled with `jepsen`).
 - Replica now correctly reflects database registration success or failure.  When replica receives a request for registering replica, it will now return status code NOT_MAIN.  If attempting to undo an incomplete registration fails, then the Memgraph instance will be intentionally crashed because the system is in unrecoverable state.  Main instance can now deal with stale RPC message GetReplicaUUID without crashing the instance.  [#2373](https://github.com/memgraph/memgraph/pull/2373)
 - Closing instance no longer crashes due to [streams](/data-streams) and/or [TTL](/querying/time-to-live) running in the background. [#2361](https://github.com/memgraph/memgraph/pull/2361)
 
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 ## Lab v2.17.0 - Sep 25, 2024
 
 {<h3> New features and improvements </h3>}
@@ -299,8 +298,6 @@ labeled with `jepsen`).
   are now aligned. Instead of breaking the connection due to
   permission issues, users will now see "N/A" where applicable.
 
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 ## Memgraph v2.20.0 - Sep 25, 2024
 
 {<h3> New features and improvements </h3>}