Make some indentation in gram.y consistent

Reviewed-by: Amit Langote <amitlangote09@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/CA+HiwqE4XTdfb1nW=Ojoy_tQSRhYt-q_kb6i5d4xcKyrLC1Nbg@mail.gmail.com

Author: petere

src/backend/parser/gram.y

@@ -645,23 +645,20 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
 %type <list>		hash_partbound
 %type <defelt>		hash_partbound_elem
 
+%type <node>	json_format_clause_opt
+				json_value_expr
+				json_output_clause_opt
+				json_name_and_value
+				json_aggregate_func
+%type <list>	json_name_and_value_list
+				json_value_expr_list
+				json_array_aggregate_order_by_clause_opt
+%type <ival>	json_encoding_clause_opt
+				json_predicate_type_constraint
+%type <boolean>	json_key_uniqueness_constraint_opt
+				json_object_constructor_null_clause_opt
+				json_array_constructor_null_clause_opt
 
-%type <node>		json_format_clause_opt
-					json_value_expr
-					json_output_clause_opt
-					json_name_and_value
-					json_aggregate_func
-
-%type <list>		json_name_and_value_list
-					json_value_expr_list
-					json_array_aggregate_order_by_clause_opt
-
-%type <ival>		json_encoding_clause_opt
-					json_predicate_type_constraint
-
-%type <boolean>		json_key_uniqueness_constraint_opt
-					json_object_constructor_null_clause_opt
-					json_array_constructor_null_clause_opt
 
 /*
  * Non-keyword token types.  These are hard-wired into the "flex" lexer.