added note

Author: CharlesDuboisSAP

orchestration/src/main/java/com/sap/ai/sdk/orchestration/spring/OrchestrationChatOptions.java

@@ -149,6 +149,7 @@ public Double getTopP() {
   @Nonnull
   @Override
   public <T extends ChatOptions> T copy() {
+    // note: this is a shallow copy
     val copyConfig =
         new OrchestrationModuleConfig()
             .withTemplateConfig(config.getTemplateConfig())