Provide correct values in pom.xml for url, scm informations instead of PROJECT_URL

### Before Creating the Enhancement Request

- [x] I have confirmed that this should be classified as an enhancement rather than a bug/feature.

### Summary

Provide correct values in pom.xml for url, scm informations instead of PROJECT_URL

for instance https://repo1.maven.org/maven2/org/apache/rocketmq/rocketmq-proto/2.1.2/rocketmq-proto-2.1.2.pom

we can notice several PROJECT_URL values

### Motivation

it will help to find source code from the jar.

### Describe the Solution You'd Like

have the correct url specified in the pom file

### Describe Alternatives You've Considered

none

### Additional Context

initially rported here https://github.com/apache/rocketmq/issues/10403

Inspect the repository's pom.xml files and compare their url and scm metadata with the published rocketmq-proto POM example. Replace PROJECT_URL values with the correct project and source-code URLs, then verify the generated or published POM exposes those links instead of placeholders.

Written by the indexing model from the issue text.