Fix typo

[cclauss]

Description

Make sure the PR is against the develop branch (see Contributing).

Make sure to set the corresponding milestone in the PR.

Please include a summary of the change(s) and which issue(s) it addresses. Please also include relevant motivation and context.

Fixes # (issue)

Type of change

Select the relevant option(s):

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works (optional)
• New and existing unit tests pass locally with my changes

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (967ec54) 20.52% compared to head (7a91922) 20.52%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1572   +/-   ##
=======================================
  Coverage   20.52%   20.52%           
=======================================
  Files         384      384           
  Lines       13038    13038           
=======================================
  Hits         2676     2676           
  Misses      10362    10362           

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[cclauss]

Python 3.6, 3.7, and 3.8 are expected below but these versions of Python are no longer tested so it is currently impossible to get a ✅ test even when correcting a simple typo.