pidgin/pidgin

Add some missed docs for PidginCredential*

2021-05-13, Elliott Sales de Andrade
7e8c50c967bc
Add some missed docs for PidginCredential*

* Add `Since` tags for `PidginCredential`.
* Add docs for `PidginCredential*` top-level API.

Testing Done:
Compile

Reviewed at https://reviews.imfreedom.org/r/651/
---
name: mercurial
buildsystem: simple
build-commands:
- make install PREFIX=/app PYTHON=python3
sources:
- type: archive
url: https://www.mercurial-scm.org/release/mercurial-5.5.tar.gz
sha256: c1ed28e1534304a7a4981ed59905286d1c56acd5b75755eedd184171a4a782b4
modules:
- python-docutils.yml