fix(strategy): Correct error message

lib/routes/admin-api/strategy.js

@@ -102,7 +102,7 @@ exports.router = function(config) {
             strategyStore
                 .getStrategy(data.name)
                 .then(() =>
-                    reject(new NameExistsError('Feature name already exist'))
+                    reject(new NameExistsError('Strategy already exist!'))
                 )
                 .catch(() => resolve(data));
         });