Flutter http package doesn't output full description and links

https://pub.dev/packages/http

Actual output:
```
##### **http (BSD-3-Clause)**  

http  
```

Expected:
```
##### **http (BSD-3-Clause)**  

A composable, multi-platform, Future-based API for HTTP requests.

https://github.com/dart-lang/http/tree/master/pkgs/http
https://github.com/dart-lang/http/blob/master/pkgs/http/LICENSE
```