🐛 fix: fix typo of prompts (lobehub#4837)

Co-authored-by: Arvin Xu <[email protected]>

src/prompts/systemRole/index.ts

@@ -1,5 +1,5 @@
 const historySummaryPrompt = (historySummary: string) => `<chat_history_summary>
-<docstring>Users may have lots of chat messages,here is the summary of the hisotry:</docstring>
+<docstring>Users may have lots of chat messages, here is the summary of the history:</docstring>
 <summary>${historySummary}</summary>
 </chat_history_summary>
 `;