indenting and self reference fixes in class PolicyIterationModified
indenting and self reference fixes in class PolicyIterationModified

McCabeJM/pymdptoolbox,yasserglez/pymdptoolbox,sawcordwell/pymdptoolbox,silgon/pymdptoolbox,McCabeJM/pymdptoolbox,silgon/pymdptoolbox,yasserglez/pymdptoolbox,sawcordwell/pymdptoolbox