Fix version typos in dev-loop.md

[mznms]

Summary of the Pull Request

Fix version typos in dev-loop.md (CMake 3.25, VS 2022)

PR Checklist

• Closes: Link to issue Typos in dev-loop.md: incorrect CMake and Visual Studio version numbers #13949
• Communication: I've discussed this with core contributors already. If work hasn't been agreed, this work might be rejected
• Tests: Added/updated if needed and all pass
• Localization: All end user facing strings can be localized
• Dev docs: Added/updated if needed
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

This PR fixes two version typos in doc/docs/dev-loop.md:

1. CMake version: 2.25 → 3.25

   • CMake 2.25 does not exist
   • Now consistent with CMakeLists.txt which specifies cmake_minimum_required(VERSION 3.25)

2. MSVC toolset version: VS 2020 → VS 2022

   • VS 2020 does not exist
   • The v143 toolset corresponds to Visual Studio 2022

Validation Steps Performed

• Verified CMake version matches CMakeLists.txt
• Confirmed v143 toolset is Visual Studio 2022

[Copilot]

Pull request overview

This PR corrects two version typos in the developer documentation that referenced nonexistent software versions, ensuring the prerequisites accurately reflect the actual required tools.

• Fixed CMake minimum version from the nonexistent 2.25 to the correct 3.25 (matching CMakeLists.txt)
• Corrected MSVC toolset reference from the nonexistent VS 2020 to the correct VS 2022 (v143 toolset)