Small update in memory.mdx, fixing Google AI parameters

Adding some suggestions from AI Reviewer

docs/concepts/memory.mdx

@@ -211,10 +211,15 @@ my_crew = Crew(
 
 ### Using Google AI embeddings
 
+### Prerequisites
+Before using Google AI embeddings, ensure you have:
+- Access to the Gemini API
+- The necessary API keys and permissions
+
 You will need to update your *pyproject.toml* dependencies:
 ```YAML
 dependencies = [
-    "google-generativeai>=0.1",
+    "google-generativeai>=0.8.4", #main version in January/2025 - crewai v.0.100.0 and crewai-tools 0.33.0
     "crewai[tools]>=0.100.0,<1.0.0"
 ]
 ```
@@ -231,8 +236,8 @@ my_crew = Crew(
     embedder={
         "provider": "google",
         "config": {
-            "api_key": "<YOUR_API_KEY>",
-            "model": "models/<model_name>"
+            "api_key": "<YOUR_API_KEY>", # Recommend fetching from environment variables
+            "model": "models/text-embedding-004"
         }
     }
 )