basin() --> usgsBasin(); javadoc edits

...va/gov/usgs/earthquake/nshmp/gmm/AbrahamsonEtAl_2014.java

...gov/usgs/earthquake/nshmp/gmm/AbrahamsonGulerce_2020.java

...va/gov/usgs/earthquake/nshmp/gmm/AtkinsonMacias_2009.java

...main/java/gov/usgs/earthquake/nshmp/gmm/BcHydro_2012.java

...in/java/gov/usgs/earthquake/nshmp/gmm/BooreEtAl_2014.java

...gov/usgs/earthquake/nshmp/gmm/CampbellBozorgnia_2014.java

.../java/gov/usgs/earthquake/nshmp/gmm/ChiouYoungs_2014.java

...in/java/gov/usgs/earthquake/nshmp/gmm/KuehnEtAl_2020.java

...n/java/gov/usgs/earthquake/nshmp/gmm/ParkerEtAl_2020.java

...ain/java/gov/usgs/earthquake/nshmp/gmm/ZhaoEtAl_2006.java