apiserver: fix --tls-sni-cert-key doc string

staging/src/k8s.io/apiserver/pkg/server/options/serving.go

@@ -125,7 +125,7 @@ func (s *SecureServingOptions) AddFlags(fs *pflag.FlagSet) {
 		"extracted. Non-wildcard matches trump over wildcard matches, explicit domain patterns "+
 		"trump over extracted names. For multiple key/certificate pairs, use the "+
 		"--tls-sni-cert-key multiple times. "+
-		"Examples: \"example.key,example.crt\" or \"*.foo.com,foo.com:foo.key,foo.crt\".")
+		"Examples: \"example.crt,example.key\" or \"foo.crt,foo.key:*.foo.com,foo.com\".")
 }
 
 func (s *SecureServingOptions) AddDeprecatedFlags(fs *pflag.FlagSet) {