adding indentation

Author: walteck

practices/securing-repositories.md

@@ -1,7 +1,7 @@
 # Securing repositories
 
 - [Securing repositories](#securing-repositories)
-- [Removing sensitive information](#removing-sensitive-information)
+  - [Removing sensitive information](#removing-sensitive-information)
   - [Prerequisites](#prerequisites)
   - [Access controls](#access-controls)
     - [Organisation-level settings](#organisation-level-settings)