hotfix: add horizontal rules to influxctl release notes

content/shared/influxctl/release-notes.md

@@ -35,12 +35,16 @@ warn	this is the *only time* you will see the token
 - Update `google.golang.org/grpc` from 1.75.1 to 1.76.0.
 - Update `google.golang.org/protobuf` from 1.36.9 to 1.36.10.
 
+---
+
 ## 2.10.5 {date="2025-09-23"}
 
 ### Bug Fixes
 
 - Update warnings for the `influxctl database delete` command.
 
+---
+
 ## 2.10.4 {date="2025-09-22"}
 
 ### Features
@@ -70,6 +74,8 @@ warn	this is the *only time* you will see the token
 - Upgrade Go to 1.25.1.
 - Upgrade `make` dependencies.
 
+---
+
 ## 2.10.3 {date="2025-07-30"}
 
 ### Features