Update sequelize.js

[nbouvrette]

Fix jsDoc to avoid IDE warning.

Pull Request check-list

Please make sure to review and check all of these items:

• Does npm run test or npm run test-DIALECT pass with this change (including linting)?
• Does the description below contain a link to an existing issue (Closes #[issue]) or a description of the issue you are solving?
• Have you added new tests to prevent regressions?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Did you follow the commit message conventions explained in CONTRIBUTING.md?

Description of change

[codecov]

Codecov Report

Merging #10002 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #10002   +/-   ##
=======================================
  Coverage   96.39%   96.39%           
=======================================
  Files          63       63           
  Lines        9400     9400           
=======================================
  Hits         9061     9061           
  Misses        339      339

Impacted Files	Coverage Δ
lib/sequelize.js	96.58% <ø> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9f58b82...65fd8d4. Read the comment docs.

[sushantdhiman]

Thanks @nbouvrette