fix: typo IMPRTANT -> IMPORTANT

app/store/chat.ts

@@ -249,7 +249,7 @@ export const useChatStore = create<ChatStore>()(
 
         const systemInfo = createMessage({
           role: "system",
-          content: `IMPRTANT: You are a virtual assistant powered by the ${
+          content: `IMPORTANT: You are a virtual assistant powered by the ${
             modelConfig.model
           } model, now time is ${new Date().toLocaleString()}}`,
           id: botMessage.id! + 1,