Update broken link in README.md

[msantosfelipe]

Motivation and Context

Broken link in README.md

Description

There is a broken link in README for the Java examples

Contribution Checklist

• [x] The code builds clean without any errors or warnings
• [ ] The PR follows the SK Contribution Guidelines and the pre-submission formatting script raises no violations
• [x] All unit tests pass, and I have added new tests where possible
• [x] I didn't break anyone :smile: