update instructions for VS2022
Issue/feature addressed
Add instructions to user guide for use with Visual Studio 2022
Proposed solution
Implementation
Edit to User Guide/Installation/source.tex
Tests
Suggested reviewers
Notes
Checklist
[ ] Functions and classes, or changes to them, are documented.-
User guide/documentation is updated. -
Changelog is updated. [ ] Suitable tests added for new functionality.-
[ ] Contributed code is correctly formatted. (See the [contributing guidelines](https://gitlab.nektar.info/nektar/nektar/-/blob/master/CONTRIBUTING.md#using-clang-format)). [ ] License added to any new files.[ ] No extraneous files have been added (e.g. compiler output or test data files).
Edited by Jacques Xing