[ci skip] Fix yout terminology and update typos configuration

[ChrisRackauckas]

Summary

This PR fixes the handling of yout terminology in DASSL.jl by recognizing it as a legitimate Fortran parameter name rather than a typo.

Problem

The previous spelling fix PR incorrectly changed yout to your in contexts where yout is actually a legitimate Fortran parameter name used in DASSL documentation and interfaces.

Changes Made

• Added 'yout' to .typos.toml as legitimate Fortran parameter name

Context

yout appears to be a standard Fortran parameter name in numerical software, particularly in contexts like:

• Array parameter documentation
• Fortran interface descriptions
• Mathematical library parameter lists

This is similar to other abbreviated parameter names commonly used in numerical computing.

Notes

• included to avoid unnecessary CI runs for terminology fixes
• This corrects the previous overly aggressive spell checking
• Maintains spell checking for actual typos while preserving domain-specific terminology