docs: Fix syntax errors.

lbuque · lbuque · commit b1767f6bf1c3 · 2024-03-08T18:48:52.000+08:00
Signed-off-by: lbuque &lt;1102390310@qq.com&gt;
diff --git a/docs/en/module/pps.rst b/docs/en/module/pps.rst
@@ -1,5 +1,5 @@
 PPS Module
-========
+==========
 
 .. include:: ../refs/module.pps.ref
 
diff --git a/docs/zh_CN/module/pps.rst b/docs/zh_CN/module/pps.rst
@@ -1,5 +1,5 @@
 PPS Module
-========
+==========
 
 .. include:: ../refs/module.pps.ref
 
