Fix GitHub issue template links

[kimsey0]

Summary & Motivation

Fix incorrect URLs in GitHub issue templates that resolve to broken pages. The links are missing the repository name in the path, causing URLs like https://github.com/platformplatform/blob/main/.github/CODE_OF_CONDUCT.md instead of the correct https://github.com/platformplatform/PlatformPlatform/blob/main/.github/CODE_OF_CONDUCT.md.

Checklist

• I have added tests, or done manual regression tests
• I have updated the documentation, if necessary

[CLAassistant]

All committers have signed the CLA.

[tjementum]

The pull request conventions fail because the branch name is not following conventions. It must be kebab-case in PlatformPlatform. But this will abandon the pull request, so I will just accept this and merge anyway.

But we should fix the links so they are relative, so projects pulling changes from PlatformPlatform do not get issue templates hardcoded to PlatformPlatform.

[tjementum]

While this will work in PlatformPlatform, it will fail in "downstream projects" are pulling changes from PlatformPlatform. If I understand the problem correct, the ../ is removing the reposiotry so lings become https://github.com/platformplatform/security/advisories/new" and not https://github.com/platformplatform/PlatformPlatform/security/advisories/new`

I think this would work

Suggested change

	description: Please let us know if this bug is security related. If so please consider using our [Report a security vulnerability](https://github.com/platformplatform/PlatformPlatform/security/advisories/new) form instead.
	description: Please let us know if this bug is security related. If so please consider using our [Report a security vulnerability](security/advisories/new) form instead.