added note for APIGW

Author: Kausik-A

src/docs/getting-started/lambda/lambda-java.mdx

@@ -26,6 +26,8 @@ With the ADOT Lambda Layer for Java, the wrapper has built-in support for instru
 The Lambda layer supports Java 8 and 11 Lambda runtimes. For more information about supported Java versions,
 see the [OpenTelemetry Java documentation](https://github.com/open-telemetry/opentelemetry-java).
 
+Note: Inside the Java-Wrapper layer only the 1 kind of APIGW (APIGatewayProxyRequestEvent) event object is currently supported.
+
 ### Add the ARN of the Lambda Layer
 
 In this section, we consume the Lambda layer for use with Java Lambda Functions.