Fix spelling errors and y+ warning message by bigfooted · Pull Request #1753 · su2code/SU2

Proposed Changes

Give a brief overview of your contribution here in a few sentences.
Ffor wall functions a warning is issued when y+ < 5, but the value 5 should be the user defined limit obtained from the config option.
Furthermore, some spelling errors are correcred

Related Work

Resolve any issues (bug fix or feature request), note any related PRs, or mention interactions with the work of others, if any.

PR Checklist

Put an X by all that apply. You can fill this out after submitting the PR. If you have any questions, don't hesitate to ask! We want to help. These are a guide for you to know what the reviewers will be looking for in your contribution.

  • I am submitting my contribution to the develop branch.
  • My contribution generates no new compiler warnings (try with --warnlevel=3 when using meson).
  • My contribution is commented and consistent with SU2 style (https://su2code.github.io/docs_v7/Style-Guide/).
  • I have added a test case that demonstrates my contribution, if necessary.
  • I have updated appropriate documentation (Tutorials, Docs Page, config_template.cpp), if necessary.