MM-29522:fix typo in constant name (#15933)

* fix type in constant name

* fix lint

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

model/ldap.go

@@ -4,7 +4,7 @@
 package model
 
 const (
-	USER_AUTH_SERVICE_LDAP      = "ldap"
-	LDAP_PUBIC_CERTIFICATE_NAME = "ldap-public.crt"
-	LDAP_PRIVATE_KEY_NAME       = "ldap-private.key"
+	USER_AUTH_SERVICE_LDAP       = "ldap"
+	LDAP_PUBLIC_CERTIFICATE_NAME = "ldap-public.crt"
+	LDAP_PRIVATE_KEY_NAME        = "ldap-private.key"
 )