Fix separator in limits

Author: Avogar

tests/queries/0_stateless/03207_json_read_subcolumns_2_compact_merge_tree.sql.j2

@@ -1,5 +1,5 @@
 -- Tags: no-fasttest, long, no-debug, no-tsan, no-asan, no-msan, no-ubsan
--- Random settings limits: index_granularity=(1000, None), index_granularity_bytes=(100000, None)
+-- Random settings limits: index_granularity=(1000, None); index_granularity_bytes=(100000, None)
 
 SET enable_json_type = 1;
 set allow_experimental_variant_type = 1;