fix: fix import statement (Model -> models)

fix #1

sample/llm_sample.py

@@ -1,4 +1,4 @@
-from g4f import Provider, Model
+from g4f import Provider, models
 from langchain.llms.base import LLM
 
 from langchain_g4f import G4FLLM
@@ -6,7 +6,7 @@ from langchain_g4f import G4FLLM
 
 def main():
     llm: LLM = G4FLLM(
-        model=Model.gpt_35_turbo,
+        model=models.gpt_35_turbo,
         provider=Provider.Aichat,
     )
 

sample/prompt_template_sample.py

@@ -1,6 +1,6 @@
-from g4f import Provider, Model
-from langchain.llms.base import LLM
+from g4f import Provider, models
 from langchain import PromptTemplate
+from langchain.llms.base import LLM
 
 from langchain_g4f import G4FLLM
 
@@ -10,7 +10,7 @@ def main():
     prompt_template = PromptTemplate(template=template, input_variables=["fruit"])
 
     llm: LLM = G4FLLM(
-        model=Model.gpt_35_turbo,
+        model=models.gpt_35_turbo,
         provider=Provider.Aichat,
     )
 

sample/sequential_chain_sample.py

@@ -1,14 +1,14 @@
-from g4f import Provider, Model
-from langchain.llms.base import LLM
+from g4f import Provider, models
 from langchain import PromptTemplate
 from langchain.chains import LLMChain, SimpleSequentialChain
+from langchain.llms.base import LLM
 
 from langchain_g4f import G4FLLM
 
 
 def main():
     llm: LLM = G4FLLM(
-        model=Model.gpt_35_turbo,
+        model=models.gpt_35_turbo,
         provider=Provider.DeepAi,
     )
 

sample/simple_chain_sample.py

@@ -1,14 +1,14 @@
-from g4f import Provider, Model
-from langchain.llms.base import LLM
+from g4f import Provider, models
 from langchain import PromptTemplate
 from langchain.chains import LLMChain
+from langchain.llms.base import LLM
 
 from langchain_g4f import G4FLLM
 
 
 def main():
     llm: LLM = G4FLLM(
-        model=Model.gpt_35_turbo,
+        model=models.gpt_35_turbo,
         provider=Provider.Aichat,
     )
     prompt_template = PromptTemplate(