BUG: Instructions on adding commitment-issues in generate template are incomplete

[petekubiak]

Describe the bug
The instructions given only mention adding commitment-issues to project dependencies, however they are also needed in build-dependencies

To Reproduce
Steps to reproduce the behavior:

1. Run cargo generate --git https://github.com/dysonltd/commitment-issues --init within an existing project
2. Follow the instructions given
3. Run cargo build

Expected behaviour
Project should compile

Hardware (please complete the following information):

• OS: Linux
• OS Version: Mint 22.2
• Rust Version: 1.88
• Commitment Issues Crate Version: 0.1.1
• Other Crate Versions: n/a