docs(norostat): correct wording

Author: dshemetov

docs/api/norostat.md

@@ -13,7 +13,7 @@ General topics not specific to any particular endpoint are discussed in the
 [contributing](README.md#contributing), [citing](README.md#citing), and
 [data licensing](README.md#data-licensing).
 
-**NOTE**: This data source stopped acquiring data in November 2020.
+**NOTE**: Delphi stopped stopped acquiring data from this data source in November 2020.
 
 ## NoroSTAT Data