[Bug] Readme links for steps to issue Employment VC leads to 404s

[jiyoonie9]

Describe the bug
Clicking on any of links in the numbered list under this heading in the readme leads to 404, pointing to a line in a file in https://github.com/TBD54566975/ssi-service/blob/main/blob/main/integration/common.go#L36, but I think that file now lives in https://github.com/TBD54566975/ssi-service/blob/main/integration/common.go

However, even with the correct link, it is unclear to me (as someone new to web5 components) how these lines should help me understand each step to issue Employment Status Credential.

Expected behavior
I would like to be able to follow the steps to issue Employment Status Credential in the readme with links that help me understand how (and why?) to execute each step.

[decentralgabe]

Links are updated; though could be worth pointing them to specific commits/versions. Will have another task for that.