Update how to find libbrotli version #110

Job	Run time
package-wheel (manylinux, ubuntu-latest)	33m 44s
lint	48s
package-wheel (macos, macos-latest)	4m 37s
package-sdist	12s
package-wheel (win, windows-latest)	8m 57s
test (ubuntu-latest, 3.7)	4m 57s
test (ubuntu-latest, 3.8)	5m 51s
test (ubuntu-latest, 3.9)	5m 8s
test (ubuntu-latest, 3.10)	2m 44s
test (ubuntu-latest, 3.11)	4m 57s
test (ubuntu-latest, 3.12)	5m 13s
test (macos-latest, 3.7)	14m 1s
test (macos-latest, 3.8)	12m 29s
test (macos-latest, 3.9)	11m 29s
test (macos-latest, 3.10)	12m 8s
test (macos-latest, 3.11)	11m 41s
test (macos-latest, 3.12)	13m 34s
test (windows-latest, 3.7)	17m 24s
test (windows-latest, 3.8)	15m 13s
test (windows-latest, 3.9)	14m 10s
test (windows-latest, 3.10)	14m 56s
test (windows-latest, 3.11)	16m 11s
test (windows-latest, 3.12)	19m 37s
publish	0s
	4h 10m 1s

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