diff --git a/src/release/gitbook.py b/src/release/gitbook.py
index 0724767..c0d6dd8 100755
--- a/src/release/gitbook.py
+++ b/src/release/gitbook.py
@@ -26,7 +26,7 @@ def markdownTransfer(content: str) -> str:
     ]
     for symbol in symbols:
         content = content.replace(symbol, '\\' + symbol)  # add `\` before symbol
-    return content
+    return '  ' + content
 
 
 def loadChapter(caption: str, content: list) -> str: