format fix

site/src/site/sphinx/classloader.md

@@ -17,6 +17,7 @@ classloader
 |[a]|列出所有ClassLoader加载的类，请谨慎使用|
 |`[c:]`|ClassLoader的hashcode|
 |`[c: r:]`|用ClassLoader去查找resource|
+
 ### 使用参考
 
 * 按类加载类型查看统计信息
@@ -128,4 +129,4 @@ $ classloader -c 226b143b -r META-INF/MANIFEST.MF
 ```shell
 $ classloader -c 1b6d3586 -r java/lang/String.class
  jar:file:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/rt.jar!/java/lang/String.class
-```
+```