connection: fix documentation verb tense
connection: fix documentation verb tense

This conforms to the official style.

Signed-off-by: Tyler Hall <3cbfc722f51d3bbaca4932ab1bccc6b380a0e19a@gmail.com>

tylerwhall/dbus-bytestream,srwalter/dbus-bytestream,srwalter/dbus-bytestream,mathstuf/dbus-bytestream,mathstuf/dbus-bytestream