Fix trigger documentation error
@@ -5,7 +5,7 @@ Triggers
Triggers are used to indicate when the cocotb scheduler should resume coroutine execution.
To use a trigger, a coroutine should :keyword:`await` it.
This will cause execution of the current coroutine to pause.
-When the trigger fires, execution of the paused coroutine will resume::
+When the trigger fires, execution of the paused coroutine will resume:
.. code-block:: python3
