Fixed minor spelling error

doc/dev_start_guide.txt

@@ -12,7 +12,7 @@ workflow and some resource for doing so.
 
 Looking for an idea for a first contribution? Check the `github issues
 <https://github.com/Theano/Theano/issues?q=is%3Aopen+is%3Aissue+label%3A%22Easy+fix%22>`_
-with a label ``easy fix``. They are good starter. It is recommanded
+with a label ``easy fix``. They are good starter. It is recommended
 that you write on the issue you want to work on it. This help make
 sure it is up to date and see if nobody else is working on it. Also,
 we can sometimes provides more information about it.  There is also