Chore: Fix some spelling errors (#3976)

app/proxyman/inbound/inbound.go

@@ -13,7 +13,7 @@ import (
 	"github.com/xtls/xray-core/features/inbound"
 )
 
-// Manager is to manage all inbound handlers.
+// Manager manages all inbound handlers.
 type Manager struct {
 	access          sync.RWMutex
 	untaggedHandler []inbound.Handler

app/proxyman/outbound/handler.go

@@ -54,7 +54,7 @@ func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter)
 	return uplinkCounter, downlinkCounter
 }
 
-// Handler is an implements of outbound.Handler.
+// Handler implements outbound.Handler.
 type Handler struct {
 	tag             string
 	senderSettings  *proxyman.SenderConfig