update chatglm6b context length

blog/2023-06-29-longchat.md

@@ -213,7 +213,7 @@ In our evaluations, commercial long-context models always fulfill their promise:
 <tr> <td><a target="_blank" href="https://huggingface.co/lmsys/longchat-13b-16k">LongChat-13B-16K </a> <td>16K</td> <td>⭐⭐⭐</td> <td>⭐⭐⭐</td> <td>⭐⭐</td></tr>
 <tr> <td><a target="_blank" href="https://huggingface.co/mosaicml/mpt-30b-chat">MPT-30B-chat</a></td> <td>8K</td> <td>⭐⭐⭐</td> <td>⭐⭐⭐</td> <td>⭐⭐</td></tr>
 <tr> <td><a target="_blank" href="https://huggingface.co/mosaicml/mpt-7b-storywriter">MPT-7B-storywriter</a></td> <td>80K</td> <td>⭐⭐⭐</td> <td>⭐⭐</td> <td>⭐</td></tr>
-<tr> <td><a target="_blank" href="https://huggingface.co/THUDM/chatglm2-6b">ChatGLM2-6B</a></td> <td>32K</td>  <td>⭐⭐⭐</td> <td>⭐</td> <td>⭐</td></tr>
+<tr> <td><a target="_blank" href="https://huggingface.co/THUDM/chatglm2-6b">ChatGLM2-6B</a></td> <td>8K</td>  <td>⭐⭐⭐</td> <td>⭐</td> <td>⭐</td></tr>
 <tr> <td><a target="_blank" href="https://chat.openai.com/">GPT-3.5-turbo</a></td> <td>16K</td> <td>⭐⭐⭐</td> <td>⭐⭐⭐</td> <td>⭐⭐⭐</td></tr>
 <tr> <td><a target="_blank" href="https://www.anthropic.com/index/introducing-claude">Anthropic Claude-1.3</a></td> <td>100K</td> <td>⭐⭐⭐</td> <td>⭐⭐⭐</td> <td>⭐⭐⭐</td></tr>
 </tbody>