Fix some typos

contrib/hugin.lua

@@ -24,7 +24,7 @@ HUGIN
 Add a new storage option to send images to hugin. 
 Images are exported to darktable tmp dir first. 
 
-ADDITIANAL SOFTWARE NEEDED FOR THIS SCRIPT
+ADDITIONAL SOFTWARE NEEDED FOR THIS SCRIPT
 * hugin
 
 USAGE

contrib/kml_export.lua

@@ -18,7 +18,7 @@
 --[[
 darktable KML export script
 
-ADDITIANAL SOFTWARE NEEDED FOR THIS SCRIPT
+ADDITIONAL SOFTWARE NEEDED FOR THIS SCRIPT
 * mkdir
 * zip (only if you create KMZ files)
 * convert (ImageMagick)
@@ -26,7 +26,7 @@ ADDITIANAL SOFTWARE NEEDED FOR THIS SCRIPT
 * xdg-user-dir
 
 WARNING
-This script is only testet with Linux
+This script is only tested with Linux
 
 USAGE
 * require this script from your main lua file

contrib/preferenceExamples.lua

@@ -16,7 +16,7 @@
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ]]
 --[[
-darktable script to show the different prefference types that are possible with the Lua
+darktable script to show the different preference types that are possible with Lua
 
 USAGE
 * require this script from your main lua file

contrib/video_mencoder.lua

@@ -18,13 +18,13 @@
 --[[
 darktable video export script
 
-ADDITIANAL SOFTWARE NEEDED FOR THIS SCRIPT
+ADDITIONAL SOFTWARE NEEDED FOR THIS SCRIPT
 * mencoder (MEncoder is from the MPlayer Team)
 * xdg-open
 * xdg-user-dir
 
 WARNING
-This script is only testet with Linux
+This script is only tested with Linux
 
 USAGE
 * require this script from your main lua file