fixed spelling of "instantiate"

while the interwebs suggest "instanciate" might be a valid spelling, it
seems quite uncommon and potentially irritating (to pedants like myself)

docs/patterns/appdispatch.rst

@@ -58,7 +58,7 @@ Dispatch by Subdomain
 
 Sometimes you might want to use multiple instances of the same application
 with different configurations.  Assuming the application is created inside
-a function and you can call that function to instanciate it, that is
+a function and you can call that function to instantiate it, that is
 really easy to implement.  In order to develop your application to support
 creating new instances in functions have a look at the
 :ref:`app-factories` pattern.

docs/views.rst

@@ -74,7 +74,7 @@ enough to explain the basic principle.  When you have a class based view
 the question comes up what `self` points to.  The way this works is that
 whenever the request is dispatched a new instance of the class is created
 and the :meth:`~flask.views.View.dispatch_request` method is called with
-the parameters from the URL rule.  The class itself is instanciated with
+the parameters from the URL rule.  The class itself is instantiated with
 the parameters passed to the :meth:`~flask.views.View.as_view` function.
 For instance you can write a class like this::