fix build error

content/en/docs/install/faqs.md

@@ -4,15 +4,15 @@ weight: 4000
 toc: false
 ---
 
-# How do I enable note search?
+## How do I enable note search?
 
 You use the "roles" system. Log in as administrator, go to the
 "control panel", select the "roles" section (under "management"). Then
 either expand the "role template" (if you want to give every user
 access to search) or create a new role (if you want to give access to
 only some users), then change the "**Usage of note search**" setting.
 
-# How do I give my users more Drive space?
+## How do I give my users more Drive space?
 
 You use the "roles" system. Log in as administrator, go to the
 "control panel", select the "roles" section (under "management"). Then
@@ -21,7 +21,7 @@ same amount space) or create a new role (if you want to give different
 amounts of space to different users), then change the "**Drive
 capacity**" setting.
 
-# How do I enable push notifications for the web interface?
+## How do I enable push notifications for the web interface?
 
 First of all, you need to generate a pair of so-called "VAPID" keys.