New comment by mobinmob on void-packages repository

https://github.com/void-linux/void-packages/pull/14877#issuecomment-537384898

Comment:
```
srcpkgs/sublime-merge/template:10: use SPDX id for 'Proprietary' license or see Manual.md
The command "common/travis/xlint.sh" failed and exited with 1 during .
```
Many proprietary programs do not have their lisences as a seperate file in the archive. Sublime-merge is one of them.