gplugin/gplugin

Make the names inside the .pc files match the pc filename

2021-09-24, Gary Kramlich
069c014ed85f
Make the names inside the .pc files match the pc filename

As far as I can tell this is purely cosmetic, but it should probably match nonetheless.

Testing Done:
ran `PKG_CONFIG_PATH=$(pwd)/meson-private pkg-config --modversion` from the build directory with and without the patch and made sure there was no difference.

Reviewed at https://reviews.imfreedom.org/r/935/
// SPDX-FileCopyrightText: 2021 GNOME Foundation
// SPDX-License-Identifier: LGPL-2.1-or-later
// A map between namespaces and base URLs for their online documentation
baseURLs = [
[ 'GLib', 'https://docs.gtk.org/glib/' ],
[ 'GObject', 'https://docs.gtk.org/gobject/' ],
[ 'GPlugin', 'https://docs.imfreedom.org/gplugin' ],
[ 'GModule', 'https://docs.gtk.org/gmodule/' ],
[ 'Gtk3', 'https://docs.gtk.org/gtk3/' ],
]