fix language

Co-authored-by: Adam Ginsburg <[email protected]>

Author: bsipocz

astroquery/nrao/__init__.py

@@ -8,7 +8,7 @@
 
 # Remove module altogether if API update is not done in 6 months (2022-11-02).
 warnings.warn("The legacy NRAO archive this module uses has been retired causing astroquery.nrao to be "
-              "broken. We will remove this exception once the sufficient updates are done to use the new "
+              "broken. We will remove this exception once sufficient updates are done to use the new "
               "NRAO archive API.")