Update springboot-handle-exception-plus.md

Author: Snailclimb

docs/advanced/springboot-handle-exception-plus.md

@@ -241,6 +241,7 @@ public class GlobalExceptionHandler {
 }
  // 不为空说明有方法处理异常
 if (!matches.isEmpty()) {
+ // 按照匹配程度从小到大排序
 matches.sort(new ExceptionDepthComparator(exceptionType));
  // 返回处理异常的方法
 return this.mappedMethods.get(matches.get(0));