Fixes misspelled word "RMagcik" in configuration.yml.example (#21740).

Patch by Tatsuya Saito.

git-svn-id: http://svn.redmine.org/redmine/trunk@15077 e93f8b46-1217-0410-a6f0-8f06a7374b81

config/configuration.yml.example

@@ -182,10 +182,10 @@ default:
   # the ImageMagick's `convert` binary. Used to generate attachment thumbnails.
   #imagemagick_convert_command:
 
-  # Configuration of RMagcik font.
+  # Configuration of RMagick font.
   #
-  # Redmine uses RMagcik in order to export gantt png.
-  # You don't need this setting if you don't install RMagcik.
+  # Redmine uses RMagick in order to export gantt png.
+  # You don't need this setting if you don't install RMagick.
   #
   # In CJK (Chinese, Japanese and Korean),
   # in order to show CJK characters correctly,