Tweak docblocks in GeoIP class

includes/class-wc-geo-ip.php

@@ -1448,8 +1448,8 @@ class WC_Geo_IP {
 	/**
 	 * Seek country IPv6.
 	 *
-	 * @param  int $ipnum [description]
-	 * @return bool|int
+	 * @param  int $ipnum
+	 * @return string
 	 */
 	function _geoip_seek_country_v6( $ipnum ) {
 		// arrays from unpack start with offset 1
@@ -1641,7 +1641,6 @@ class WC_Geo_IP {
 	 * @param  string $string
 	 * @param  int    $start
 	 * @param  int    $length
-	 *
 	 * @return string
 	 */
 	private function _safe_substr( $string, $start, $length ) {