Switch mentions of lalapps executables to the equivalent lalpulsar executables
After lscsoft/lalsuite!1904 (merged) is merged and a new release is made, I need to switch any mention of lalapps
executables to the new lalpulsar
version, e.g., lalapps_pulsar_parameter_estimation_nested
will become lalpulsar_parameter_estimation_nested
and lalapps_heterodyne_pulsar
will become lalpulsar_heterodyne
.