### feature：

### optimize：
comments format
### bug-fix：

core/circuitbreaker/rule.go

@@ -78,10 +78,10 @@ type Rule struct {
 	// for ErrorRatio, it represents the max error request ratio
 	// for ErrorCount, it represents the max error request count
 	Threshold float64 `json:"threshold"`
-	//ProbeNum is number of probes required when the circuit breaker is half-open.
-	//when the probe num are set  and circuit breaker in the half-open state.
-	//if err occurs during the probe, the circuit breaker is opened immediately.
-	//otherwise,the circuit breaker is closed only after the number of probes is reached
+	// ProbeNum is number of probes required when the circuit breaker is half-open.
+	// when the probe num are set  and circuit breaker in the half-open state.
+	// if err occurs during the probe, the circuit breaker is opened immediately.
+	// otherwise,the circuit breaker is closed only after the number of probes is reached
 	ProbeNum uint64 `json:"probeNum"`
 }