[Code scan] Fix stale repository and PyPI metadata links

[njzjz]

This issue was found by a Codex global scan of the repository at commit 19f9265.

Several user-facing metadata locations disagree about the canonical project location or still point at template URLs.

README source clone instructions point to the GitLab RutgersLBSR URL:

deepmd-gnn/README.md

Lines 66 to 70 in 19f9265

	First, clone this repository:
	```sh
	git clone https://gitlab.com/RutgersLBSR/deepmd-gnn
	cd deepmd-gnn

Package metadata also advertises the GitLab URL:

deepmd-gnn/pyproject.toml

Lines 50 to 51 in 19f9265

	[project.urls]
	repository = "https://gitlab.com/RutgersLBSR/deepmd-gnn"

Docs config advertises both GitHub and GitLab:

deepmd-gnn/docs/conf.py

Lines 67 to 69 in 19f9265

	html_theme_options = {
	"github_url": "https://github.com/deepmodeling/deepmd-gnn",
	"gitlab_url": "https://gitlab.com/RutgersLBSR/deepmd-gnn",

The release environment URL still points to python-template rather than deepmd-gnn:

deepmd-gnn/.github/workflows/release.yaml

Lines 75 to 80 in 19f9265

	pypi-publish:
	name: Release to pypi
	runs-on: ubuntu-latest
	environment:
	name: pypi_publish
	url: https://pypi.org/p/python-template

The local repository remote for this scan is github.com:deepmodeling/deepmd-gnn.git, and issues are managed in the DeepModeling GitHub project. Mismatched links can send users to the wrong clone/reporting target or show the wrong package during release approval.

Suggested fix: choose the canonical URL and align README, package metadata, docs theme links, mirror workflow comments, and the PyPI environment URL. If GitLab is an intentional mirror, label it as a mirror instead of the primary repository.