Minor error in help message for depend-info option

[dbird137]

Describe the bug
Minor error in help message.
vcpkg depend-info [pkg]..
should probably be,
vcpkg depend-info <pkg>..
since the package name(s) is not optional.

Environment

• OS: macOS
• Compiler: clang 11.0

To Reproduce
Steps to reproduce the behavior:

1. ./vcpkg depend-info
2. See error
   Error: 'depend-info' requires 1 arguments, but 0 were provided.

Expected behavior
no error, or a help message showing that the package name is required

Failure logs
none

Additional context
Probably just a loose end from this change: #8135

[autoantwort]

Can be closed. Is vcpkg depend-info <pkg>... now

[PhoebeHui]

This issue has been fixed.