docs: update readme content

[caic99]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 65.89%. Comparing base (86d968f) to head (95aa65d).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #362   +/-   ##
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  Coverage   65.89%   65.89%           
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  Files          35       35           
  Lines        1589     1589           
  Branches      189      189           
=======================================
  Hits         1047     1047           
  Misses        500      500           
  Partials       42       42           

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[Copilot]

Pull Request Overview

This PR updates documentation content in the README file and changes a dependency specification in the project configuration. The primary purpose is to improve documentation clarity and switch from a git-based dependency to a stable release version.

Key changes:

• Updates terminology and formatting in the LAMBench metrics documentation
• Switches deepmd-kit dependency from git repository to stable version 3.1.0
• Expands domain-specific property calculation documentation with additional benchmarks

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
pyproject.toml	Changes deepmd-kit dependency from git repository to stable version 3.1.0
lambench/metrics/results/README.md	Updates terminology, expands documentation on domain-specific property calculations, and fixes minor formatting issues

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