fix(genapi): update model context length

Author: fpagny

pages/generative-apis/reference-content/supported-models.mdx

@@ -39,7 +39,7 @@ Our API supports the most popular models for [Chat](/generative-apis/how-to/quer
 | Meta        | `llama-3.3-70b-instruct`  | 100k  | 4096 | [Llama 3.3 Community](https://www.llama.com/llama3_3/license/) | [HF](https://huggingface.co/meta-llama/Llama-3.3-70B-Instruct) |
 | Meta        | `llama-3.1-8b-instruct`  | 128k  | 16384 | [Llama 3.1 Community](https://llama.meta.com/llama3_1/license/) | [HF](https://huggingface.co/meta-llama/Llama-3.1-8B-Instruct) |
 | Mistral      | `mistral-nemo-instruct-2407`   | 128k | 8192 | [Apache-2.0](https://www.apache.org/licenses/LICENSE-2.0) | [HF](https://huggingface.co/mistralai/Mistral-Nemo-Instruct-2407) |
-| Qwen      | `qwen3-235b-a22b-instruct-2507`     | 260k | 8192 | [Apache-2.0](https://www.apache.org/licenses/LICENSE-2.0) | [HF](https://huggingface.co/Qwen/Qwen3-235B-A22B-Instruct-2507) |
+| Qwen      | `qwen3-235b-a22b-instruct-2507`     | 250k | 8192 | [Apache-2.0](https://www.apache.org/licenses/LICENSE-2.0) | [HF](https://huggingface.co/Qwen/Qwen3-235B-A22B-Instruct-2507) |
 | Qwen      | `qwen3-coder-30b-a3b-instruct`     | 128k | 8192 | [Apache-2.0](https://www.apache.org/licenses/LICENSE-2.0) | [HF](https://huggingface.co/Qwen/Qwen3-Coder-30B-A3B-Instruct) |
 | DeepSeek  | `deepseek-r1-distill-llama-70b`     | 32k | 4096 | [MIT](https://huggingface.co/datasets/choosealicense/licenses/blob/main/markdown/mit.md) | [HF](https://huggingface.co/deepseek-ai/DeepSeek-R1-Distill-Llama-70B) |