Spellcheck is confused by something

[jmholla]

Prerequisites

• [X ] Put an X between the brackets on this line if you have done all of the following:
  • Reproduced the problem in Safe Mode: https://flight-manual.atom.io/hacking-atom/sections/debugging/#using-safe-mode
  • Followed all applicable steps in the debugging guide: https://flight-manual.atom.io/hacking-atom/sections/debugging/
  • Checked the FAQs on the message board for common solutions: https://discuss.atom.io/c/faq
  • Checked that your issue isn't already filed: https://github.com/issues?utf8=✓&q=is%3Aissue+user%3Aatom
  • Checked that there is not already an Atom package that provides the described functionality: https://atom.io/packages

Description

In a Markdown document, every word (include -) is underlined:

- FAQ is minuscule

I discovered this after it corrected my spelling of minuscule. (Yes, the corrected version ended up underlined.)

Steps to Reproduce

1. Put the above in a new document.

Expected behavior:

Nothing being underlined.

Actual behavior:

Everything is underlined except spaces.

Reproduces how often:

100%

Versions

> atom --version
Atom    : 1.52.0
Electron: 6.1.12
Chrome  : 76.0.3809.146
Node    : 12.4.0
> apm --version
apm  2.5.2
npm  6.14.8
node 12.4.0 x64
atom 1.52.0
python 2.7.16
git 2.26.0

Mac 10.15.7

[jmholla]

I've found this string also exhibits the same behavior:

- Internal StackOverflow

[bfayejones]

I suspect this is related to #281, which I have also been having issues with.