Fix typo in ltnews35, \obeyedlines -> \obeyedline

[muzimuzhi]

READ ME FIRST: Please understand that in most cases we will not be able to merge a pull request because there are a lot of internal activities needed when updating the LaTeX2e sources. If you have a code suggestion please discuss it with the team first.

Pull requests in this repository are intended for LaTeX Team members only.

Internal housekeeping

Status of pull request

• Ready to merge

Checklist of required changes before merge will be approved

• [ ] Test file(s) added
• [ ] Version and date string updated in changed source files
• [ ] Relevant \changes entries in source included
• [ ] Relevant changes.txt updated
• [ ] Rollback provided (if necessary)?
• [ ] ltnewsX.tex (and/or latexchanges.tex) updated

[FrankMittelbach]

thanks