Add AvailableSince component to custom procedures documentation (#550)

Author: Copilot

docs/modeling/custom-proc.md

@@ -4,12 +4,15 @@ description: ZenStack custom procedures
 ---
 
 import ZModelVsPSL from '../_components/ZModelVsPSL';
-import PreviewFeature from '../_components/PreviewFeature'
+import PreviewFeature from '../_components/PreviewFeature';
+import AvailableSince from '../_components/AvailableSince';
 
 # Custom Procedure
 
 <PreviewFeature name="Custom procedure" />
 
+<AvailableSince version="v3.2.0" />
+
 <ZModelVsPSL>
 Custom procedure is a ZModel feature and doesn't exist in PSL.
 </ZModelVsPSL>

docs/orm/custom-proc.md

@@ -3,12 +3,15 @@ sidebar_position: 13
 description: ORM custom procedures
 ---
 
-import PreviewFeature from '../_components/PreviewFeature'
+import PreviewFeature from '../_components/PreviewFeature';
+import AvailableSince from '../_components/AvailableSince';
 
 # Custom Procedures
 
 <PreviewFeature name="Custom procedure" />
 
+<AvailableSince version="v3.2.0" />
+
 :::info
 Please refer to the [Modeling](../modeling/custom-proc.md) part for how to define custom procedures in ZModel.
 :::