fix: fix static_checks error

apps/emqx_rule_engine/src/emqx_rule_engine.erl

@@ -196,6 +196,7 @@ maybe_add_metrics_for_rule(Id) ->
 clear_metrics_for_rule(Id) ->
     ok = emqx_plugin_libs_metrics:clear_metrics(rule_metrics, Id).
 
+-spec(reset_metrics_for_rule(rule_id()) -> ok).
 reset_metrics_for_rule(Id) ->
     emqx_plugin_libs_metrics:reset_metrics(rule_metrics, Id).
 

apps/emqx_rule_engine/src/proto/emqx_rule_engine_proto_v1.erl

@@ -29,7 +29,7 @@
 introduced_in() ->
     "5.0.0".
 
--spec reset_metrics(emqx_rule_engine:rule_id()) ->
+-spec reset_metrics(rule_id()) ->
           emqx_cluster_rpc:multicall_return(ok).
 reset_metrics(RuleId) ->
     emqx_cluster_rpc:multicall(emqx_rule_engine, reset_metrics_for_rule, [RuleId]).