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/
VOID:POINTER,POINTER,OBJECT
BOOLEAN:OBJECT,POINTER,STRING
VOID:STRING,STRING
VOID:STRING,STRING,DOUBLE
VOID:ENUM,STRING,STRING
VOID:ENUM,STRING,STRING,BOOLEAN
VOID:FLAGS,FLAGS
VOID:STRING,STRING,OBJECT,OBJECT
VOID:POINTER,POINTER,OBJECT,OBJECT
VOID:STRING,STRING,POINTER