Improve format of UG by using numbers

[afroneth]

Hello,

Currently, the main section of your UG are not labelled by numbers. eg. Section 1, Section 1.2.1, etc.. This might make it harder for the user to refer to specific sections of your UG. For example, if the delete task feature is labelled as section 1.3.1, I can simply term it as section 1.3.1, instead of saying "the section that explains delete task", which is rather unclear.