Fix a typo [ci skip]

2019-09-30 18:03:30 +09:00 · 2019-09-30 18:03:30 +09:00 · cc8116b03e
--- a/sample/trick2018/05-tompng/remarks.markdown
+++ b/sample/trick2018/05-tompng/remarks.markdown
@ -28,4 +28,4 @@ gen3d 'ochoko.stl' do
  l----www----------www----l
 end
 ```
-`+` and `-` are the same meaning(just for apperance)
+`+` and `-` are the same meaning(just for appearance)