Merge pull request #5405 from sushantdhiman/patch-1

[ci skip] Updated test commands in contributing docs

CONTRIBUTING.md

@@ -124,7 +124,7 @@ All tests are located in the `test` folder (which contains the
 lovely [Mocha](http://visionmedia.github.io/mocha/) tests).
 
 ```console
-$ npm run all || mysql || sqlite || pgsql || postgres || mariadb || postgres-native
+$ npm run test-all || test-mysql || test-sqlite || test-mssql || test-postgres || test-mariadb || test-postgres-native
 
 $ # alternatively you can pass database credentials with $variables when testing
 $ DIALECT=dialect SEQ_DB=database SEQ_USER=user SEQ_PW=password npm test