Changes tag in docblock of events should be unified

core.memberlist_view_profile, core.search_get_topic_data, core.search_modify_rowset, core.search_modify_tpl_ary use @changed tag, while all other events use @change tag (present tense).

nickvergessen asked me to add @changed tag into one of my PRs. So maybe all @change tags should be replaced by @changed tag, or he mistyped it, and it should be contrariwise?