[doc] fix @:build documentation

closes #10639

src-json/meta.json

@@ -112,9 +112,9 @@
 	{
 		"name": "Build",
 		"metadata": ":build",
-		"doc": "Builds a class or enum from a macro.",
+		"doc": "Builds a class, enum, or abstract from a macro.",
 		"params": ["Build macro call"],
-		"targets": ["TClass", "TEnum"],
+		"targets": ["TClass", "TEnum", "TAbstract"],
 		"links": ["https://haxe.org/manual/macro-type-building.html"]
 	},
 	{