Fixing comment typo for Doctrine findBy and findOneBy code example
minor #3896 Fixing comment typo for Doctrine findBy and findOneBy code example (beenanner)

This PR was merged into the 2.3 branch.

Discussion
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Fixing comment typo for Doctrine findBy and findOneBy code example

| Q                 | A
| --------------- | ---
| Doc fix?        | yes
| New docs?   | no
| Applies to     | all (or 2.3+)
| Fixed tickets | N/A

Commits
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a97991b Fixing comment typo for Doctrine findBy and findOneBy code example