Change Role.manageable to Role.editable

src/structures/Role.js

@@ -290,7 +290,7 @@ class Role {
    * @type {boolean}
    * @readonly
    */
-  get manageable() {
+  get editable() {
     if (this.managed) return false;
     const clientMember = this.guild.member(this.client.user);
     if (!clientMember.hasPermission(Constants.PermissionFlags.MANAGE_ROLES_OR_PERMISSIONS)) return false;