Update command to point to dev DB

[mathemancer]

Tiny change to correct an error in the developer guide.

Previously, the command in question was advising devs to try to connect to an unused dependency database rather than the actual dev database.

Checklist

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the develop branch of the repository
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

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[mathemancer]

I'll assign for review once I hear back from the dev with the issue.