Edited the Orchestration module sections

1. Reordered instructions in the orchestration module installation section
    1. Create database.
    2. Create identity service credentials.
    3. Install packages.
    4. Configure service.
    5. Synchronize database.
    6. Start or restart service.
2. Edited titles and wording for consistency and conventions

Change-Id: I7f35274b7cbc99ce0452f4ec5b81d8412ea85b05
Implements: blueprint installation-guide-improvements
Co-Authored-By: Matt Kassawara <mkassawara@gmail.com>
Merge "Edited the Orchestration module sections"