added comments for variables

Author: TamilRamGanesan-SF5080

ej2-asp-core-mvc/code-snippet/ai-assistview/ai-integrations/gemini-ai/geminimvc.cs

@@ -42,7 +42,7 @@ public async Task<IActionResult> GetAIResponse([FromBody] PromptRequest request)
 
                 string apiKey = ""; // Replace with your key
                 var googleAI = new GoogleAI(apiKey: apiKey);
-                var model = googleAI.GenerativeModel(model: Model.Gemini15Flash);
+                var model = googleAI.GenerativeModel(model: Model.Gemini15Flash); //Replace Your Model Name Here
 
                 var responseText = await model.GenerateContent(request.Prompt);