Typo in StrOpt docstring: Integer to String
Typo in StrOpt docstring: Integer to String

The docstring for StrOpt incorrectly lists the type as an Integer.
Simple nit patch to set to String.

Change-Id: Ibeca6ce2f67cae5b23bc3f91194df3d4b497fa38

tianshan/oslo.config,magic0704/oslo.config,varunarya10/oslo.config,JioCloud/oslo.config,shad7/oslo.config