[Minor] Fix `get_tld()` functions descriptions

src/lua/lua_url.c

@@ -338,8 +338,8 @@ lua_url_get_phished (lua_State *L)
 
 /***
  * @method url:get_tld()
- * Get top level domain part of the url host
- * @return {string} top level part of the url host
+ * Get effective second level domain part (eSLD) of the url host
+ * @return {string} effective second level domain part (eSLD) of the url host
  */
 static gint
 lua_url_get_tld (lua_State *L)

src/lua/lua_util.c

@@ -164,10 +164,10 @@ LUA_FUNCTION_DEF (util, humanize_number);
 
 /***
  * @function util.get_tld(host)
- * Returns tld for the specified host
+ * Returns effective second level domain part (eSLD) for the specified host
  *
  * @param {string} host hostname
- * @return {string} tld part of hostname or the full hostname
+ * @return {string} eSLD part of the hostname or the full hostname if eSLD was not found
  */
 LUA_FUNCTION_DEF (util, get_tld);