Fix #315: beamdp energy terminology inconsistency
Fix #315: beamdp energy terminology inconsistency

Fix the BEAMDP instructions so that references to Emin and Emax
correctly state that kinetic energy should be used, not total energy.

mchamberland/EGSnrc,MartinMartinov/EGSnrc,MartinMartinov/EGSnrc,ftessier/EGSnrc,nrc-cnrc/EGSnrc,mchamberland/EGSnrc,ftessier/EGSnrc,ftessier/EGSnrc,ftessier/EGSnrc,ftessier/EGSnrc,crcrewso/EGSnrc,marenaud/EGSnrc,marenaud/EGSnrc,marenaud/EGSnrc,crcrewso/EGSnrc,nrc-cnrc/EGSnrc,mchamberland/EGSnrc,crcrewso/EGSnrc,mchamberland/EGSnrc,mchamberland/EGSnrc,MartinMartinov/EGSnrc,crcrewso/EGSnrc,marenaud/EGSnrc,marenaud/EGSnrc,nrc-cnrc/EGSnrc,ftessier/EGSnrc,MartinMartinov/EGSnrc,nrc-cnrc/EGSnrc,marenaud/EGSnrc,MartinMartinov/EGSnrc,mchamberland/EGSnrc,crcrewso/EGSnrc,nrc-cnrc/EGSnrc