docs: fix typos

[YardenCuriel]

fix singular/plural

[CLAassistant]

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[YardenCuriel]

Hey I already sign the CLA so I'm not sure why this is still a blocker

[YardenCuriel]

@ralf0131 I'll appreciate you assistance on that issue

[ralf0131]

Hi, Sorry for the late response! It seems that you haven't sign the CLA yet. Please make sure that your email is correct. You need to use the same email when you commit the message and sign the CLA.