Fix unstable regression test result.

Whoops, missed that same test was made for json as well as jsonb.

src/test/regress/expected/json.out

@@ -1689,7 +1689,7 @@ select to_tsvector('simple', '{"a": "aaa bbb ddd ccc", "b": ["eee fff ggg"], "c"
 (1 row)
 
 -- json to tsvector with stop words
-select to_tsvector('{"a": "aaa in bbb ddd ccc", "b": ["the eee fff ggg"], "c": {"d": "hhh. iii"}}'::json);
+select to_tsvector('english', '{"a": "aaa in bbb ddd ccc", "b": ["the eee fff ggg"], "c": {"d": "hhh. iii"}}'::json);
                                 to_tsvector                                 
 ----------------------------------------------------------------------------
  'aaa':1 'bbb':3 'ccc':5 'ddd':4 'eee':8 'fff':9 'ggg':10 'hhh':12 'iii':13

src/test/regress/sql/json.sql

@@ -559,7 +559,7 @@ select to_tsvector('{"a": "aaa bbb ddd ccc", "b": ["eee fff ggg"], "c": {"d": "h
 select to_tsvector('simple', '{"a": "aaa bbb ddd ccc", "b": ["eee fff ggg"], "c": {"d": "hhh iii"}}'::json);
 
 -- json to tsvector with stop words
-select to_tsvector('{"a": "aaa in bbb ddd ccc", "b": ["the eee fff ggg"], "c": {"d": "hhh. iii"}}'::json);
+select to_tsvector('english', '{"a": "aaa in bbb ddd ccc", "b": ["the eee fff ggg"], "c": {"d": "hhh. iii"}}'::json);
 
 -- ts_vector corner cases
 select to_tsvector('""'::json);