Fix documentation for SQLServer

[kwooccli]

It's showing CockroachDB docs instead at the moment:

[thadguidry]

@kwooccli Thanks for the heads up! Do you mind sending us a PR to our website repo https://github.com/9tigerio/db2rest-web with the fix? Essentially it means changing those 2 pages, but for SQLServer, but can use all the similar content from the 2 Cockroach pages. And maybe show example from Azure or another cloud vendor that has SQLServer support?