Allow site admin to check /api/v1/orgs endpoints (#10867)

Fix #9950

Signed-off-by: Andrew Thornton <art27@cantab.net>

routers/api/v1/org/team.go

@@ -320,7 +320,7 @@ func GetTeamMembers(ctx *context.APIContext) {
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "IsOrganizationMember", err)
 		return
-	} else if !isMember {
+	} else if !isMember && !ctx.User.IsAdmin {
 		ctx.NotFound()
 		return
 	}