fix: two more pkg-config requires typos (#6097)
fix: two more pkg-config requires typos (#6097)

I think these slipped in during
https://github.com/googleapis/google-cloud-cpp/pull/5756 also.

FYI: I'm creating a CI build that will catch these in the future...
that's how I found these.
googleapis/google-cloud-cpp,googleapis/google-cloud-cpp,googleapis/google-cloud-cpp,googleapis/google-cloud-cpp