minor formatting

LICENSE.md

@@ -3,7 +3,7 @@
 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:
+Interior. For more information, see the official USGS copyright policy at
 <https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits>.
 
 Additionally, we waive copyright and related rights in the work
@@ -11,7 +11,7 @@ worldwide through the CC0 1.0 Universal public domain dedication.
 
 ## CC0 1.0 Universal Summary
 
-This is a human-readable summary of the [Legal Code (read the full text)][2].
+This is a human-readable summary of the [Legal Code (read the full text)][1].
 
 ### No Copyright
 
@@ -35,4 +35,4 @@ all uses of the work, to the fullest extent permitted by applicable law.
 When using or citing the work, you should not imply endorsement by the
 author or the affirmer.
 
-[2]: https://creativecommons.org/publicdomain/zero/1.0/legalcode
+[1]: https://creativecommons.org/publicdomain/zero/1.0/legalcode