GNOME Bugzilla – Bug 748618
correct mktink to Mtink .
Last modified: 2015-04-29 12:02:13 UTC
Detailed steps:- 1. Type "How can I check my printer's ink/toner levels?" in search box, press enter. 2. The word 'mktink' over here is a typo. The FSF approved package or application is 'Mtink'. (source URL: http://directory.fsf.org/wiki/Mtink) 3. Replace 'mktink' with 'Mtink'.
https://help.gnome.org/users/gnome-help/3.16/printing-inklevel.html
Thanks for the bug report. I pushed a fix to master as commit c9416862789ea3ea8c7b4c2e26da566be8cce6df. The fix should be in the next stable release of gnome-user-docs.