diff --git a/website/docs/advanced/runtime-hook.md b/website/docs/advanced/runtime-hook.md
index 015cb733..1bb42c3b 100644
--- a/website/docs/advanced/runtime-hook.md
+++ b/website/docs/advanced/runtime-hook.md
@@ -82,6 +82,7 @@ async def do_something(event: Event):
 
 ```python
 from nonebot.message import event_postprocessor
+
 @event_postprocessor
 async def do_something(event: Event):
     pass
@@ -93,6 +94,7 @@ async def do_something(event: Event):
 
 ```python
 from nonebot.message import run_preprocessor
+
 @run_preprocessor
 async def do_something(event: Event, matcher: Matcher):
     pass
diff --git a/website/versioned_docs/version-2.0.0/advanced/runtime-hook.md b/website/versioned_docs/version-2.0.0/advanced/runtime-hook.md
index 015cb733..1bb42c3b 100644
--- a/website/versioned_docs/version-2.0.0/advanced/runtime-hook.md
+++ b/website/versioned_docs/version-2.0.0/advanced/runtime-hook.md
@@ -82,6 +82,7 @@ async def do_something(event: Event):
 
 ```python
 from nonebot.message import event_postprocessor
+
 @event_postprocessor
 async def do_something(event: Event):
     pass
@@ -93,6 +94,7 @@ async def do_something(event: Event):
 
 ```python
 from nonebot.message import run_preprocessor
+
 @run_preprocessor
 async def do_something(event: Event, matcher: Matcher):
     pass
diff --git a/website/versioned_docs/version-2.0.0rc4/advanced/runtime-hook.md b/website/versioned_docs/version-2.0.0rc4/advanced/runtime-hook.md
index 015cb733..1bb42c3b 100644
--- a/website/versioned_docs/version-2.0.0rc4/advanced/runtime-hook.md
+++ b/website/versioned_docs/version-2.0.0rc4/advanced/runtime-hook.md
@@ -82,6 +82,7 @@ async def do_something(event: Event):
 
 ```python
 from nonebot.message import event_postprocessor
+
 @event_postprocessor
 async def do_something(event: Event):
     pass
@@ -93,6 +94,7 @@ async def do_something(event: Event):
 
 ```python
 from nonebot.message import run_preprocessor
+
 @run_preprocessor
 async def do_something(event: Event, matcher: Matcher):
     pass