[views doc] little mistake

[Cyriaque Dupoirieux]

in views documentation - 
http://forrest.apache.org/docs_0_70/howto/howto-view-dsl.html#firstView 
- , it's written :

   * "... For that we will create a file called *index.ft* and save it
     in our xdocs directory. ... "
it's actually *index.fv*...

--
Cyriaque,