Fix typo in docs readme

Author: vitorbaraujo

docs/README.md

@@ -5,10 +5,10 @@ actionText: Get Started →
 actionLink: intro.md
 features:
 - title: Easy
-  details: Use etiher the $api prototype or one of the plugins 
+  details: Use either the $api prototype or one of the plugins
 - title: Axios
   details: It uses axios as requests library
 - title: CRUD operations faster
   details: Use save() to save your form or load() to load you list
 footer: MIT Licensed | Copyright © 2018 J. Eduardo Kimura Reis
----
+---