DOC Fix typo.

Mathieu Dubois · Mathieu Dubois · commit d2fca1cfc2c8 · 2015-09-13T21:23:43.000+02:00
diff --git a/doc/users/function_interface.rst b/doc/users/function_interface.rst
@@ -146,6 +146,6 @@ the string would be
 Unlike when using a function object, this input can be set like any other,
 meaning that you could write a function that outputs different function
 strings depending on some run-time contingencies, and connect that output
-the the ``function_str`` input of a downstream Function interface.
+the ``function_str`` input of a downstream Function interface.
 
 .. include:: ../links_names.txt
