Minor clarification

[agkhall]

• I provide my work under the project license.
• I grant such license of my work as is required for the purposes of future print editions to Ben Straub and Scott Chacon.

Changes

• Add "from the main project" for clarity.

Context

Because of the cd DbConnector/ in the previous code section, it was unclear which location to run the git submodule init and git submodule update commands.