config: add Validate func, small lint fixes

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

meter/meter.go

@@ -102,7 +102,7 @@ func (k byKey) Swap(i, j int) {
 	k[i*2+1], k[j*2+1] = k[j*2+1], k[i*2+1]
 }
 
-// BuildLables used to sort labels and delete duplicates.
+// BuildLabels used to sort labels and delete duplicates.
 // Last value wins in case of duplicate label keys.
 func BuildLabels(labels ...string) []string {
 	if len(labels)%2 == 1 {

meter/wrapper/wrapper.go

@@ -104,7 +104,7 @@ func Meter(m meter.Meter) Option {
 	}
 }
 
-// SkipEndpoint add endpoint to skip
+// SkipEndoints add endpoint to skip
 func SkipEndoints(eps ...string) Option {
 	return func(o *Options) {
 		o.SkipEndpoints = append(o.SkipEndpoints, eps...)
@@ -294,7 +294,7 @@ func (w *wrapper) HandlerFunc(fn server.HandlerFunc) server.HandlerFunc {
 	}
 }
 
-// NewSubscribeWrapper create server subscribe wrapper
+// NewSubscriberWrapper create server subscribe wrapper
 func NewSubscriberWrapper(opts ...Option) server.SubscriberWrapper {
 	handler := &wrapper{
 		opts: NewOptions(opts...),