pidgin/pidgin

Update the documentation for the 2.14.3 release
release-2.x.y
2021-04-08, Gary Kramlich
98f8af044651
Update the documentation for the 2.14.3 release

Testing Done:
Ran `make distcheck` without issue.

Reviewed at https://reviews.imfreedom.org/r/599/
How to build Pidgin for Windows using MinGW
===========================================
For the latest build instructions, please refer to:
http://developer.pidgin.im/wiki/BuildingWinPidgin