pidgin/pidgin

Update the C plugin tutorial to use the gplugin macros

2021-06-07, Gary Kramlich
60f4b2a6d66a
Update the C plugin tutorial to use the gplugin macros

Testing Done:
Built and reviewed the docs.

Reviewed at https://reviews.imfreedom.org/r/686/
libpurple/data/purple-url-handler.desktop.in
libpurple/protocols/null/nullprpl.c
pidgin/data/im.pidgin.Pidgin.desktop.in
sub/libpurple/data/purple-url-handler.desktop.in
sub/libpurple/protocols/null/nullprpl.c
sub/pidgin/data/im.pidgin.Pidgin.desktop.in