Update property name

Author: siddick

lib/validate.js

@@ -61,11 +61,11 @@ function getSchema(checkStyle) {
       version: Joi.string()
     }),
     host: joiRegex(checkStyle.host),
-    scheme: joiRegex(checkStyle.schemes),
+    scheme: joiRegex(checkStyle.scheme),
     basePath: joiRegex(checkStyle.basePath),
     produces: Joi.array().items(joiRegex(checkStyle.produces)),
     consumes: Joi.array().items(joiRegex(checkStyle.consumes)),
-    schemes: Joi.array().items(joiRegex(checkStyle.schemes)),
+    schemes: Joi.array().items(joiRegex(checkStyle.scheme)),
     paths: Joi.object().pattern(pathConvention,
       Joi.object().pattern(verbs, Joi.object().keys({
         summary: Joi.any(),