web: fix threat statistics endpoint path

Use /threats/statistics to match backend routes.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: vsilent

web/src/services/api.ts

@@ -39,7 +39,7 @@ class ApiService {
   }
 
   async getThreatStatistics(): Promise<ThreatStatistics> {
-    const response = await this.api.get('/statistics');
+    const response = await this.api.get('/threats/statistics');
     return response.data;
   }