Typo correction to OutputFiles.rst
@@ -634,7 +634,7 @@ the failed keywords.
Programmatic modification of results
------------------------------------
-If the provided built-in features to modify results are are not enough,
+If the provided built-in features to modify results are not enough,
Robot Framework makes it possible to do custom modifications
programmatically. This is accomplished by creating a model modifier and
activating it using the :option:`--prerebotmodifier` option.
