docs(fix): fixed small typo (#1154)

PeterKassenaar · davideast · commit 10507aa024f9 · 2017-09-27T10:12:53.000-06:00
diff --git a/docs/Auth-with-Ionic2.md b/docs/Auth-with-Ionic2.md
@@ -19,7 +19,7 @@ v6.9.1
 
 ```
 
-As of writting this document, this is the most stable version. If you're not on this version,
+As of writing this document, this is the most stable version. If you're not on this version,
 please upgrade yourself to latest version by installing node from [here](https://nodejs.org).
 
 Check your npm version by executing the following command.
