This article is written in American English, which has its own spelling conventions (color, defense, traveled) and some terms that are used in it may be different or absent from other varieties of English. According to the relevant style guide, this should not be changed without broad consensus.
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Hi IP, Wikipedia doesn't have a preference over national varieties of English. Generally, articles with strong national ties should use the English of that nation (e.g. article about an American airline should use American English).
Most likely someone from the UK created this article as the first version uses the spelling "centre". In such a case where an article uses one variety consistently, this should be retained and not changed to one's preference. See more about that at WP:ENGVAR. – NJD-DE (talk) 22:11, 21 June 2021 (UTC)[reply]