[libshumate] docs: Install into datadir / 'doc'

[Corentin Noël <corentinnoel src gnome org>]

commit a8febd85991c81a04a8700a25a69c8760ee8f0c6
Author: Chris Mayo <aklhfex gmail com>
Date:   Wed Jul 21 19:34:25 2021 +0100

    docs: Install into datadir / 'doc'
    
    As per FHS and GNU conventions.

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 0ad4b99..60fe8ec 100644
--- a/meson.build
+++ b/meson.build
@@ -45,7 +45,7 @@ typelibdir = join_paths(libdir, 'girepository-1.0')
 pkgconfigdir = join_paths(libdir, 'pkgconfig')
 
 girdir = join_paths(datadir, 'gir-1.0')
-docs_dir = datadir / 'docs'
+docs_dir = datadir / 'doc'
 vapidir = join_paths(datadir, 'vala', 'vapi')
 
 # Dependencies