pidgin/pidgin

Add a donate link that opens https://imfreedom.org/donate/
release-2.x.y
2021-06-14, Gary Kramlich
13a246aa0656
Add a donate link that opens https://imfreedom.org/donate/

Testing Done:
Ran locally

Reviewed at https://reviews.imfreedom.org/r/749/
[Desktop Entry]
_Name=Pidgin Internet Messenger
_GenericName=Internet Messenger
_Comment=Chat over IM. Supports AIM, Google Talk, Jabber/XMPP, and more
Exec=pidgin
Icon=pidgin
StartupNotify=true
Terminal=false
Type=Application
Categories=Network;InstantMessaging;
@USES_MM_CHAT_SECTION@