Fix typos

docs/installation.rst

@@ -383,9 +383,9 @@ Blueprints
 ----------
 
 `Blueprints are Flask's reusable apps <http://flask.pocoo.org/docs/0.12/blueprints/>`_.
-Superset allows you to specify
-pass an array of Blueprints in your ``superset_config`` module. Here's
-an example on how this can work with an simple Blueprint. By doing
+Superset allows you to specify an array of Blueprints
+an array of Blueprints in your ``superset_config`` module. Here's
+an example on how this can work with a simple Blueprint. By doing
 so, you can expect Superset to serve a page that says "OK"
 at the ``/simple_page`` url. This can allow you to run other things such
 as custom data visualization applications alongside Superset, on the