Update first sentence of TERMS

Author: Scotchester

TERMS.md

@@ -1,5 +1,5 @@
-As a work of the United States Government, this package (excluding the
-exceptions below) is in the public domain within the United States.
+As a work of the United States Government, this package (excluding any
+exceptions listed below) is in the public domain within the United States.
 Additionally, we waive copyright and related rights in the work worldwide
 through the CC0 1.0 Universal public domain dedication.