docs: explain SQL Server SSL option#578

Haihan-Jiang wants to merge 1 commit into

GoogleCloudPlatform:mainGoogleCloudPlatform/cloud-sql-nodejs-connector:mainfrom

Haihan-Jiang:codex/cloud-sql-sqlserver-ssl-docHaihan-Jiang/cloud-sql-nodejs-connector:codex/cloud-sql-sqlserver-ssl-docCopy head branch name to clipboard