[PowerPoint] Tag new articles as preview (#5106)

Author: ElizabethSamuel-MSFT

docs/powerpoint/bind-shapes-in-presentation.md

@@ -6,7 +6,7 @@ ms.date: 04/02/2025
 ms.localizationpriority: medium
 ---
 
-# Bind to shapes in a PowerPoint presentation
+# Bind to shapes in a PowerPoint presentation (preview)
 
 Your PowerPoint add-in can bind to shapes to consistently access them through an identifier. The add-in establishes a binding by calling `BindingCollection.add` and assigning a unique identifier. Use the identifier at any time to reference the shape and access its properties. Creating bindings provides the following value to your add-in.
 

docs/powerpoint/work-with-tables.md

@@ -6,7 +6,7 @@ ms.date: 04/02/2025
 ms.localizationpriority: medium
 ---
 
-# Work with tables using the PowerPoint JavaScript API
+# Work with tables using the PowerPoint JavaScript API (preview)
 
 This article provides code samples that show how to create tables and control formatting by using the PowerPoint JavaScript API.  
 

docs/toc.yml

@@ -893,13 +893,13 @@ items:
       displayName: PowerPoint
     - name: Work with tables
       href: powerpoint/work-with-tables.md
-      displayName: PowerPoint
+      displayName: PowerPoint, preview
     - name: Work with shapes
       href: powerpoint/shapes.md
       displayName: PowerPoint
     - name: Bind shapes to a data source
       href: powerpoint/bind-shapes-in-presentation.md
-      displayName: PowerPoint
+      displayName: PowerPoint, preview
 - name: Project
   items:
   - name: Project add-ins documentation