docs: fix spelling error (vuejs#817)

v1nay · Akryum · commit ffbf75e652a5 · 2018-10-28T12:19:08.000+01:00
diff --git a/docs/open-in-editor.md b/docs/open-in-editor.md
@@ -6,7 +6,7 @@ Nuxt supports this feature out-of-the-box. Make sure to be in debug mode.
 
 ## Webpack
 
-In your Vue project, install the [launch-editor-middleware](https://github.com/yyx990803/launch-editor#middleware) package and modifiy your webpack configuration:
+In your Vue project, install the [launch-editor-middleware](https://github.com/yyx990803/launch-editor#middleware) package and modify your webpack configuration:
 
 1. Import the package:
 
