Update languages.yml

Detect Inno Setup installer scripts (http://www.jrsoftware.org/isinfo.php)
Update vendor.yml

extend the vendor/ exclusion to handle vendors/

Some projects use this folder to store external libaries (eg https://github.com/Elgg/Elgg)
Revert "Merge pull request #695 from github/detect-prose"

This reverts commit 80321272b12ea7b1346e8ebd8ac26b41a97257cd, reversing
changes made to 02500d38305458877482d8c4756e311cf1eaaf6a.
Merge pull request #746 from tnm/no-prose

Revert "Merge pull request #695 from github/detect-prose"
2.9.7
Merge pull request #691 from le717/master

Detect Inno Setup installer scripts
Merge pull request #737 from jeabakker/patch-1

Update vendor.yml