Fix typo.

jugmac00 · web-flow · commit 44a2726bf6a8 · 2019-02-21T11:36:47.000+01:00
diff --git a/docs/index.rst b/docs/index.rst
@@ -28,7 +28,7 @@ older version you will have to upgrade or disable the Jinja support
 Configuration
 -------------
 
-To get started all you need to do is to instanciate a :class:`Babel`
+To get started all you need to do is to instantiate a :class:`Babel`
 object after configuring the application::
 
     from flask import Flask
