Remove unpaired `}` [ci skip]

activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb

@@ -752,13 +752,12 @@ def rename_column(table_name, column_name, new_column_name)
       #
       #   CREATE INDEX developers_on_name_and_city ON developers USING gist (name, city gist_trgm_ops) -- PostgreSQL
       #
-      #   add_index(:developers, [:name, :city], using: 'gist', opclass: :gist_trgm_ops })
+      #   add_index(:developers, [:name, :city], using: 'gist', opclass: :gist_trgm_ops)
       #
       # generates:
       #
       #   CREATE INDEX developers_on_name_and_city ON developers USING gist (name gist_trgm_ops, city gist_trgm_ops) -- PostgreSQL
       #
-      #
       # Note: only supported by PostgreSQL
       #
       # ====== Creating an index with a specific type