Small grammar fix

[robin-macpherson]

A very minor grammar fix for the documentation.

[claassistantio]

All committers have signed the CLA.

[robin-macpherson]

Hi @nikolasburk , apologies for tagging you randomly but it appears I missed something when creating this PR and one other #4955 so nobody was added/notified as a reviewer. Would you mind helping me get these approved?

[robin-macpherson]

@do4gr I apologize for the random tags, just trying to understand how I can make someone aware that this PR exists since I'm unable to add reviewers and none were added automatically after I signed the CLA. Same problem for #4955 . I must have missed a step somewhere creating my PRs.

Thank you all 🙏🏼

[nikolasburk]

Thanks a lot for catching this @robin-macpherson and apologies for the delay 🙌

[robin-macpherson]

Thanks a lot for catching this @robin-macpherson and apologies for the delay 🙌

Thank you @nikolasburk ! Would you mind also merging #4955 ? Also, what's the correct way for me to do this in the future so that I can add you as a reviewer and not have to tag you in a comment?