[DOC] Japanese for multi-byte characters #637

Job	Run time
ruby-versions / Generate Ruby versions	3s
ubuntu-24.04 2.7	43s
ubuntu-24.04 3.2	22s
ubuntu-24.04 3.0	20s
ubuntu-24.04 3.4	15s
ubuntu-24.04 truffleruby-head	40s
ubuntu-22.04 3.0	14s
ubuntu-24.04 3.1	15s
ubuntu-24.04 head	20s
ubuntu-24.04 3.3	22s
ubuntu-24.04 4.0	23s
ubuntu-24.04 debug	27s
ubuntu-22.04 2.7	53s
ubuntu-24.04 jruby-head	1m 20s
ubuntu-22.04 truffleruby-head	36s
ubuntu-22.04 debug	31s
ubuntu-22.04 3.3	20s
ubuntu-22.04 3.4	15s
ubuntu-22.04 4.0	23s
ubuntu-22.04 jruby-head	1m 13s
ubuntu-22.04 head	20s
ubuntu-22.04 3.1	17s
ubuntu-22.04 3.2	17s
	10m 49s

Provide feedback