build

Updated Japanese API documentation #75

Job	Run time
Build on ruby-head-debug (debug)	1m 57s
fedora	2m 50s
ubuntu ruby-2.7	1m 16s
ubuntu ruby-2.6	1m 27s
ubuntu ruby-3.2	1m 4s
ubuntu ruby-3.1	1m 0s
ubuntu ruby-3.0	1m 0s
ubuntu ruby-3.4	1m 15s
ubuntu ruby-3.3	1m 8s
macos ruby-2.6	1m 1s
macos ruby-2.7	58s
macos ruby-3.0	38s
macos ruby-3.3	30s
macos ruby-3.4	42s
windows ruby-2.7	3m 11s
ubuntu ruby-head	1m 11s
macos ruby-3.1	41s
macos ruby-3.2	34s
windows ruby-2.6	3m 14s
macos ruby-head	34s
windows ruby-3.2	2m 36s
windows ruby-3.1	2m 38s
windows ruby-3.3	2m 47s
windows ruby-head	2m 18s
windows ruby-3.0	2m 25s
windows ruby-3.4	2m 15s
	41m 10s

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