Clarify random seed comment.

Author: drvinceknight

docs/tutorials/further_topics/approximate_moran_processes.rst

@@ -26,9 +26,9 @@ Now let us create an Approximate Moran Process::
     >>> amp.population_distribution()
     Counter({'Random: 0.5': 3})
 
-We see that the :code:`Random: 0.5` won this Moran process. This is not what
-happens in a standard Moran process where the :code:`Random: 0.5` player will
-not win::
+We see that, for this random seed, the :code:`Random: 0.5` won this Moran
+process. This is not what happens in a standard Moran process where the
+:code:`Random: 0.5` player will not win::
 
     >>> axl.seed(2)
     >>> amp = axl.MoranProcess(players)