Fix OCSP typo in README.md

[kenyon]

No description provided.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[hslatman]

Hey @kenyon, I see your thumbs-down on the comments asking for the CLA to be signed. I take it you're not willing to sign it? That's OK, but without it we can't merge the patch with you as the committer.

[kenyon]

Yeah, not worth the hassle of getting company approval to sign a CLA.

[hslatman]

Fixed in #2588. Thanks for letting us know, @kenyon! 😄