Fix annotation of quark.utils.tools.contains

[dolamroth]

Fixes #880

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.31%. Comparing base (4e5f7cb) to head (7ca6d1e).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #885   +/-   ##
=======================================
  Coverage   81.31%   81.31%           
=======================================
  Files          80       80           
  Lines        6948     6948           
=======================================
  Hits         5650     5650           
  Misses       1298     1298           

Flag	Coverage Δ
unittests	81.31% <ø> (ø)

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[haeter525]

LGTM. Thank you!