Fix relref and add banner to develop section

Author: cmilesb

content/develop/ai/langcache/_index.md

@@ -9,6 +9,8 @@ description: Store LLM responses for AI apps in a semantic cache.
 linkTitle: LangCache
 hideListLinks: true
 weight: 30
+bannerText: LangCache is currently available in preview. Features and behavior are subject to change.
+bannerChildren: true
 ---
 
 Redis LangCache is a fully-managed semantic caching service that reduces large language model (LLM) costs and improves response times for AI applications.

content/embeds/rc-version-upgrade.md

@@ -8,4 +8,4 @@ Select the version to upgrade your databases from the list and select **Upgrade*
 
 The upgrade will start one week from your request, according to your subscription's [maintenance windows]({{< relref "/operate/rc/subscriptions/maintenance/set-maintenance-windows" >}}). 
 
-Review the [7.2 breaking changes]({{< relref "/operate/rc/changelog/2023/june-2023#redis-72-breaking-changes" >}}) or [7.4 breaking changes]({{< relref "/operate/rc/changelog/july-2024#redis-74-breaking-changes" >}}) before you request to upgrade.
+Review the [7.2 breaking changes]({{< relref "/operate/rc/changelog/2023/june-2023#redis-72-breaking-changes" >}}) or [7.4 breaking changes]({{< relref "/operate/rc/changelog/2024/july-2024#redis-74-breaking-changes" >}}) before you request to upgrade.

content/operate/rc/langcache/_index.md

@@ -9,7 +9,7 @@ hideListLinks: true
 linktitle: LangCache
 title: Semantic caching with LangCache on Redis Cloud
 weight: 36
-bannerText: LangCache on Redis Cloud is currently available as a public preview.
+bannerText: LangCache on Redis Cloud is currently available as a public preview. Features and behavior are subject to change.
 bannerChildren: true
 ---