[gegl] Fix user-visible syntax

[Alexandre Prokoudine <aprokoudine src gnome org>]

commit b7f056d246fbeebe7d68eec3bca876abdf181126
Author: Alexandre Prokoudine <alexandre prokoudine gmail com>
Date:   Wed Aug 7 17:19:49 2019 +0300

    Fix user-visible syntax

 gegl/gegl-init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gegl/gegl-init.c b/gegl/gegl-init.c
index 752594987..739349939 100644
--- a/gegl/gegl-init.c
+++ b/gegl/gegl-init.c
@@ -233,7 +233,7 @@ static const GOptionEntry cmd_entries[]=
     {
      "gegl-quality", 0, 0,
      G_OPTION_ARG_STRING, &cmd_gegl_quality,
-     N_("The quality of rendering a value between 0.0(fast) and 1.0(reference)"), "<quality>"
+     N_("The quality of rendering, a value between 0.0 (fast) and 1.0 (reference)"), "<quality>"
     },
     {
      "gegl-threads", 0, 0,