[gimp] Issue #2920: Dilate and Erode filters' tooltips are untranslatable.

[Jehan <jehanp src gnome org>]

commit f8f3a74971685ef79d78a108568ea50d61444b6e
Author: Jehan <jehan girinstud io>
Date:   Thu Feb 7 15:41:55 2019 +0100

    Issue #2920: Dilate and Erode filters' tooltips are untranslatable.
    
    Wrong message contexts!

 app/actions/filters-actions.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/app/actions/filters-actions.c b/app/actions/filters-actions.c
index 2be4ad4d1a..f58b0cb479 100644
--- a/app/actions/filters-actions.c
+++ b/app/actions/filters-actions.c
@@ -135,7 +135,7 @@ static const GimpStringActionEntry filters_settings_actions[] =
 {
   { "filters-dilate", GIMP_ICON_GEGL,
     NC_("filters-action", "_Dilate"), NULL,
-    NC_("drawable-action", "Grow lighter areas of the image"),
+    NC_("filters-action", "Grow lighter areas of the image"),
     "gegl:value-propagate\n"
     "(mode white)"
     "(lower-threshold 0.000000)"
@@ -151,7 +151,7 @@ static const GimpStringActionEntry filters_settings_actions[] =
 
   { "filters-erode", GIMP_ICON_GEGL,
     NC_("filters-action", "_Erode"), NULL,
-    NC_("drawable-action", "Grow darker areas of the image"),
+    NC_("filters-action", "Grow darker areas of the image"),
     "gegl:value-propagate\n"
     "(mode black)"
     "(lower-threshold 0.000000)"