Correcting `overlay` -> `bridge` driver in run.md
Correcting `overlay` -> `bridge` driver in run.md

Correcting `overlay` -> `bridge` driver in run.md to match the preceding paragraph.

Signed-off-by: Jasmine Hegman <5bfd08bdac5988b8c1d14a86bf8ab736db159e9f@jhegman.com>

aditirajagopal/docker,aditirajagopal/docker,aditirajagopal/docker