[chore] gprc -> grpc typos (#11473) #69

Job	Run time
setup-environment	47s
govulncheck	1m 10s
test-coverage	8m 38s
checks	2m 8s
lint	4m 2s
unittest-matrix (ubuntu-latest, ~1.23)	5m 4s
unittest-matrix (ubuntu-latest, ~1.22)	5m 17s
cross-build-collector (darwin, amd64)	40s
cross-build-collector (darwin, arm64)	48s
cross-build-collector (linux, 386)	55s
cross-build-collector (linux, amd64)	40s
cross-build-collector (linux, arm64)	47s
cross-build-collector (linux, ppc64le)	41s
cross-build-collector (linux, arm, 7)	47s
cross-build-collector (linux, s390x)	41s
cross-build-collector (windows, 386)	44s
cross-build-collector (windows, amd64)	45s
unittest	1s
	34m 35s

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