Last modified: 2013-10-09 17:24:13 UTC
(1) The string for the label [[d:MediaWiki:Datatypes-type-globe-coordinate]] seems to be defined in mediawiki/extensions/DataTypes (see https://git.wikimedia.org/blob/mediawiki%2Fextensions%2FDataTypes.git/HEAD/DataTypes.i18n.php ) (2) The label appears, e.g. at https://www.wikidata.org/wiki/Property:P625 as "Data type: Geographic coordinates" (3) To match the usage on WikiData, please change the string in the code from: 'datatypes-type-globe-coordinate' => 'Geographic coordinate', to 'datatypes-type-globe-coordinate' => 'Geographic coordinates', (4) Current label was added in June ([[gerrit:67067]]) (5) See also [[d:MediaWiki talk:Datatypes-type-globe-coordinate]]
I am afraid the Wikidata usage is incorrect. In general, data type labels feature the singular form: The data type of a coordinate is "Geographic coordinate". If, for some reason, plurals should be used on Wikidata, the other data type labels would needed to be changed as well: "String" -> "Strings", "Time" -> "Times", ...
Excuse me, reverting my previous comment after receiving some explanation. Fixed in https://gerrit.wikimedia.org/r/#/c/88697/