// might not be needed for Unix Domain Socket endpoint

[hug-dev]

In this paragraph, it is written:

If the scheme is set to unix, then the authority component MUST NOT be set, and the path component MUST be set to the absolute path of the SPIFFE Workload Endpoint Unix Domain Socket (e.g. unix:///path/to/endpoint.sock). The scheme and path components are mandatory, and no other component may be set.

I believe the authority component is introduced with // so if only the path component is required then the example of URI should be: unix:/path/to/endpoint.sock (without the //).