Iceberg - update schema page (#354)

* Rename to Specify Iceberg schema for findability

* Use correct branch name

* Wrong branch prefix

* Fix local playbook content source

* Update local-antora-playbook.yml

* Remove beta label reintroduced with rebase

* Sync with docs main branch

---------

Co-authored-by: Jake Cahill <[email protected]>

Author: kbatuigas

modules/ROOT/nav.adoc

@@ -413,7 +413,7 @@
 *** xref:manage:rpk/config-rpk-profile.adoc[]
 ** xref:manage:iceberg/index.adoc[Iceberg]
 *** xref:manage:iceberg/about-iceberg-topics.adoc[]
-*** xref:manage:iceberg/choose-iceberg-mode.adoc[Choose Iceberg Mode]
+*** xref:manage:iceberg/specify-iceberg-schema.adoc[]
 *** xref:manage:iceberg/use-iceberg-catalogs.adoc[]
 *** xref:manage:iceberg/query-iceberg-topics.adoc[]
 *** xref:manage:iceberg/iceberg-topics-databricks-unity.adoc[Query Iceberg Topics with Databricks Unity Catalog]

modules/manage/pages/iceberg/choose-iceberg-mode.adoc

@@ -0,0 +1,5 @@
+= Specify Iceberg Schema
+:description: Learn about supported Iceberg modes and how you can integrate schemas with Iceberg topics.
+:page-aliases: manage:iceberg/choose-iceberg-mode.adoc 
+
+include::ROOT:manage:iceberg/specify-iceberg-schema.adoc[tag=single-source]