minor #931 Update sending.rst (chshanovskiy)
minor #931 Update sending.rst (chshanovskiy)

This PR was merged into the 6.0-dev branch.

Discussion
----------

Update sending.rst

Added brackets to Swift_SmtpTransport instantiation

Commits
-------

2d20e9d Update sending.rst

gencer/swiftmailer,michabbb-backup/swiftmailer,c960657/swiftmailer,Rotzbua/swiftmailer,swiftmailer/swiftmailer,c960657/swiftmailer,voku/swiftmailer,swiftmailer/swiftmailer,jamesggordon/swiftmailer,gencer/swiftmailer,Rotzbua/swiftmailer,jamesggordon/swiftmailer,michabbb-backup/swiftmailer,voku/swiftmailer