additional correction needed with m_cli in fault modeler for YC1985 MFD

[kejohnso]

Like the double-truncated GR MFD (before the recent correction in #108), occurrence rates for MFDs of type YoungsCoppersmithMFD change depending on the specified lower magnitude bound of the MFD (m_cli, formerly m_min). The total moment rate stays the same and thus the rates for each magnitude bin are slightly increased for higher values of m_cli. Also like the GR MFD, the rates seem to stabilize at m_cli~4.0.

I am in the process of a PR to correct this.

demo-pre-fix.pdf