[wing] meson: use the proper license string

[Ignacio Casal Quinteiro <icq src gnome org>]

commit b7d7dbe1d26d9037c5838dd77d9f09682bfad089
Author: Ignacio Casal Quinteiro <ignacio casal nice-software com>
Date:   Mon Mar 20 00:10:33 2017 +0100

    meson: use the proper license string

 meson.build |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/meson.build b/meson.build
index edd04a3..2ad8f87 100644
--- a/meson.build
+++ b/meson.build
@@ -4,7 +4,7 @@ project('wing', 'c',
           'buildtype=debugoptimized',
           'warning_level=2'
         ],
-        license: 'LGPL2+',
+        license: 'LGPLv2.1+',
         meson_version: '>= 0.36.0')
 
 wing_version = meson.project_version()