x-tagGroups is broken

[Nerzal]

Describe the bug
I tried to add x-tagGroups using the following code.
This results in an error.

Result

2020/08/24 20:28:43 annotation @x-taggroups need a value

To Reproduce
Steps to reproduce the behavior:
Add this anywhere above a main

// @x-tagGroups [{"name":"Natural Persons","tags":["Person","PersonRisk","PersonDocuments"]}]

Expected behavior
No error and extension documentation gets created accordingly.

Your swag version
1.6.7

Your go version
1.14.2

Desktop (please complete the following information):

• OS: Ubuntu

Additional Info
If i use a wrong name for the extension, it gets generated, but with the wrong name.

Example:

// @x-taggroups [{"name":"Natural Persons","tags":["Person","PersonRisk","PersonDocuments"]}]