docs(README.md): update model recommendation for documentation genera…

…tion

Strike through previous recommendations about `gpt-3.5` and `gpt-4` models due to their inconsistent results. Add new recommendation for `gpt-4-1106-preview` model as it provides the best results for documentation generation. Also, mention that the default model of JotBot is `gpt-3.5-turbo` for its cost-effectiveness.

README.md

@@ -10,12 +10,16 @@ projects, bridging the gap between comprehensive code and insightful documentati
 ~~The documentation of this repository was entirely generated by JotBot using
 `gpt-4` but currently (2023/07/18) I get the best results using `gpt-3.5-turbo`.~~
 
-OpenAI's `gpt-3.5` and `gpt-4` models demonstrate fluctuations in quality over time.
-Determining which model excels at any given instance can be challenging, but `gpt-4` often yields more consistent results. 
+~~OpenAI's `gpt-3.5` and `gpt-4` models demonstrate fluctuations in quality over time.
+Determining which model excels at any given instance can be challenging, but `gpt-4` often yields more consistent results.~~
 
-For general applications, I recommend using `gpt-3.5-turbo-16k` as a default,
+~~For general applications, I recommend using `gpt-3.5-turbo-16k` as a default,
 and temporarliy switching to `gpt-4` in scenarios where `gpt-3.5` might fall
-short.
+short.~~
+
+`gpt-4-1106-preview` is the best model for generating documentation so far.
+The default model of JotBot is `gpt-3.5-turbo` which is gives the best value
+for money.
 
 You can find generated TypeScript documentation in [packages/jotbot](./packages/jotbot).