Merge branch 'fix_license' into 'main'

update license

See merge request !78

LICENSE.md

@@ -5,7 +5,7 @@ Unless otherwise noted, This project is in the public domain in the United
 States because it contains materials that originally came from the United
 States Geological Survey, an agency of the United States Department of
 Interior. For more information, see the official USGS copyright policy at
-https://www2.usgs.gov/visual-id/credit_usgs.html#copyright
+https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits
 
 Additionally, we waive copyright and related rights in the work
 worldwide through the CC0 1.0 Universal public domain dedication.
@@ -43,4 +43,5 @@ author or the affirmer.
 
 
 
-[1]: https://creativecommons.org/publicdomain/zero/1.0/legalcode
\ No newline at end of file
+[1]: https://creativecommons.org/publicdomain/zero/1.0/legalcode
+