fully add thinking support to generate()

https://github.com/ollama/ollama-python/pull/521 missed some calls

examples/README.md

@@ -65,3 +65,6 @@ Requirement: `pip install tqdm`
 
 ### Thinking - Enable thinking mode for a model
 - [thinking.py](thinking.py)
+
+### Thinking (generate) - Enable thinking mode for a model
+- [thinking-generate.py](thinking-generate.py)

examples/thinking-generate.py

@@ -0,0 +1,13 @@
+from ollama import generate
+
+messages = [
+  {
+    'role': 'user',
+    'content': 'What is 10 + 23?',
+  },
+]
+
+response = generate('deepseek-r1', 'why is the sky blue', think=True)
+
+print('Thinking:\n========\n\n' + response.thinking)
+print('\nResponse:\n========\n\n' + response.response)