Fix group3_requirements.yaml

Author: jochenklar

definitions/group3_requirements.yaml

@@ -226,7 +226,8 @@
 - specifier: water-use
   title: "Water management: non-irrigation water use"
   required: []
-  harmonized: []
+  harmonized:
+  - water_global
   sectors: []
   datasets:
   - Non-irrigation water use (withdrawal and consumption)