chore: add metadata ref to code snippet

Author: amasotti

.doc_gen/metadata/bedrock-runtime_metadata.yaml

@@ -673,6 +673,14 @@ bedrock-runtime_InvokeModel_TitanText:
             - description: Use the Invoke Model API to send a text message.
               snippet_tags:
                 - bedrock-runtime.java2.InvokeModel_AmazonTitanText
+    Kotlin:
+      versions:
+        - sdk_version: 1
+          github: kotlin/services/bedrock-runtime
+          excerpts:
+            - description: Use the Invoke Model API to generate a short story.
+              snippet_tags:
+                - bedrock-runtime.kotlin.InvokeModel_AmazonTitanText
     .NET:
       versions:
         - sdk_version: 3

kotlin/services/bedrock-runtime/src/main/kotlin/com/example/bedrockruntime/InvokeModel.kt

@@ -3,14 +3,12 @@
 
 package com.example.bedrockruntime
 
-// snippet-start:[bedrock.kotlin.invoke_model.import]
+// snippet-start:[bedrock-runtime.kotlin.InvokeModel_AmazonTitanText]
 import aws.sdk.kotlin.services.bedrockruntime.BedrockRuntimeClient
 import aws.sdk.kotlin.services.bedrockruntime.model.InvokeModelRequest
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.json.Json
-// snippet-end:[bedrock.kotlin.invoke_model.import]
 
-// snippet-start:[bedrock.kotlin.invoke_model.main]
 /**
  * Before running this Kotlin code example, set up your development environment, including your credentials.
  *
@@ -66,4 +64,4 @@ private data class BedrockResponse(val results: List<Result>)
 
 @Serializable
 private data class Result(val outputText: String)
-// snippet-end:[bedrock.kotlin.invoke_model.main]
+// snippet-end:[bedrock-runtime.kotlin.InvokeModel_AmazonTitanText]