fix：修复索引错误

index/root_index.yaml

@@ -208,7 +208,7 @@ schools:
     initial: "S"
     resource_folder: "AHSZU"    
 
-    - id: "HUAT"
+  - id: "HUAT"
     name: "湖北汽车工业学院"
     initial: "H"
     resource_folder: "HUAT"