change argument name to model_name (#394)

Co-authored-by: Philippe Miron <[email protected]>

Author: philippemiron

google/generativeai/__init__.py

@@ -30,7 +30,7 @@
 
 genai.configure(api_key=os.environ['API_KEY'])
 
-model = genai.GenerativeModel(name='gemini-1.5-flash')
+model = genai.GenerativeModel(model_name='gemini-1.5-flash')
 response = model.generate_content('Teach me about how an LLM works')
 
 print(response.text)