Fix: "language"を"domain"に修正 #3661

Job	Run time
build (production)	3m 28s
build (test)	3m 44s
test (3.2)	6m 43s
Libvips tests (3.2)	2m 2s
Back to original and return test (.ruby-version)	11m 13s
test (.ruby-version)	9m 28s
End to End testing (3.2)	4m 11s
Libvips tests (.ruby-version)	1m 57s
End to End testing (.ruby-version)	2m 49s
Elastic Search integration testing (3.2, docker.elastic.co/elasticsearch/elasticsearch:7.17.13)	5m 17s
Elastic Search integration testing (.ruby-version, docker.elastic.co/elasticsearch/elasticsearch:...	3m 50s
Elastic Search integration testing (.ruby-version, docker.elastic.co/elasticsearch/elasticsearch:...	4m 50s
Elastic Search integration testing (.ruby-version, opensearchproject/opensearch:2)	4m 1s
	1h 3m 33s

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