Update Docker image name for Harper v5 + pro

[dillardm89]

Issue Type

Missing information

Content Location

https://docs.harperdb.io/learn/getting-started/install-and-connect-harper

What's wrong?

Docs do not include the new Harper v5 and pro Docker image names

Suggested improvement

Docs should indicate different Docker image names for Harper v5 harperfast/harper and pro harperfast/harper-pro are different, while also including the image harperdb/harperdb references for older/legacy Harper versions.

Additional context

No response

Are you planning to fix this issue?

No, just reporting the issue

First-time contributor support

• I'm new to contributing and would appreciate guidance on the process
• I'd like help understanding the project structure
• I need assistance with setting up the development environment
• I'm comfortable contributing but new to this project specifically

[Ethan-Arrowood]

Does #477 complete this?

[dillardm89]

Completed under #477