libgnt/libgnt

Point to the proper url for symbols deprecated in version 3.0. Fixes LIBGNT-9

2020-11-01, Gary Kramlich
0af73f366d25
Point to the proper url for symbols deprecated in version 3.0. Fixes LIBGNT-9

Testing Done:
Built the docs and verified the link works locally.

Reviewed at https://reviews.imfreedom.org/r/187/
option('doc', type : 'boolean', value : true, yield : true,
description : 'build documentation with gtk-doc')
option('introspection', type : 'boolean', value : true, yield : true,
description : 'build introspection data')