Fixed typo in CreatingTasks.rst
Changed "It has been always been possible, bu Robot Framework 3.1..." to "It has been always been possible, but Robot Framework 3.1..."
@@ -3,7 +3,7 @@ Creating tasks
In addition to test automation, Robot Framework can be used for other
automation purposes, including `robotic process automation`__ (RPA).
-It has been always been possible, bu Robot Framework 3.1 added official
+It has been always been possible, but Robot Framework 3.1 added official
support for automating *tasks*, not only tests. For most parts creating
tasks works the same way as `creating tests`_ and the only real difference
is in terminology. Tasks can also be organized into suites__ exactly like
