docs: update Qodo Merge default models from Sonnet-4 to Haiku-4.5 and reorder model list

Author: ofir-frd

docs/docs/usage-guide/qodo_merge_models.md

@@ -1,15 +1,15 @@
 
-The default models used by Qodo Merge 💎 (August 2025) are a combination of GPT-5, Sonnet-4, and Gemini 2.5 Pro.
+The default models used by Qodo Merge 💎 (October 2025) are a combination of GPT-5, Haiku-4.5, and Gemini 2.5 Pro.
 
 ### Selecting a Specific Model
 
 Users can configure Qodo Merge to use only a specific model by editing the [configuration](https://qodo-merge-docs.qodo.ai/usage-guide/configuration_options/) file.
 The models supported by Qodo Merge are:
 
 - `gpt-5`
-- `claude-4-sonnet`
-- `o4-mini`
+- `claude-haiku-4.5`
 - `gemini-2.5-pro`
+- `o4-mini`
 - `deepseek/r1`
 
 To restrict Qodo Merge to using only `o4-mini`, add this setting: