build

Fix several typos #74

Job	Run time
Build on ruby-head-debug (debug)	2m 0s
fedora	2m 47s
ubuntu ruby-3.1	1m 3s
ubuntu ruby-3.2	1m 7s
ubuntu ruby-3.0	1m 4s
ubuntu ruby-2.6	1m 27s
ubuntu ruby-3.3	1m 5s
ubuntu ruby-2.7	1m 19s
macos ruby-2.6	1m 3s
macos ruby-3.2	31s
ubuntu ruby-head	1m 13s
macos ruby-3.0	44s
ubuntu ruby-3.4	1m 17s
windows ruby-3.0	2m 37s
windows ruby-2.7	3m 5s
windows ruby-2.6	3m 30s
macos ruby-2.7	58s
windows ruby-3.4	2m 12s
macos ruby-3.4	43s
windows ruby-3.2	2m 38s
windows ruby-3.1	2m 18s
macos ruby-3.1	43s
macos ruby-3.3	38s
windows ruby-head	2m 16s
windows ruby-3.3	2m 46s
macos ruby-head	44s
	41m 48s

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