New review comment by Johnnynator on void-packages repository

https://github.com/void-linux/void-packages/pull/29605#discussion_r598129553

Comment:
```
  "/usr/lib/qt5/bin/qmake"

  but this file does not exist.  Possible reasons include:
```
Yep, that message says that qmake is needed, which would be provided by `qt5-qmake`.