fix: correct local registry port in README.md

[joebowbeer]

Purpose

• Correct the local registry port in README.md

Does this introduce a breaking change?

[ ] Yes
[x] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[x] Documentation content changes
[ ] Other... Please describe:

How to Test

• Read README

What to Check

Verify that the following are valid

• Local registry port matches docs

Other Information