New review comment by 0x5c on void-packages repository

https://github.com/void-linux/void-packages/pull/33686#discussion_r737804330

Comment:
It's interesting that the other hunspell packages (including the one this is based on) also have that oddity
```shell
$ rg 'license="SCOWL"'                                             
srcpkgs/hunspell-en_US/template
9:license="SCOWL" # not in SPDX

srcpkgs/hunspell-en_CA/template
9:license="SCOWL" # not in SPDX

srcpkgs/hunspell-en_GB-ize/template
11:license="SCOWL" # not in SPDX

srcpkgs/hunspell-en_AU/template
9:license="SCOWL" # not in SPDX

$ rg 'license="custom:SCOWL"'

```