Update README.md

Author: CleanTalk

README.md

@@ -178,6 +178,6 @@ API returns PHP object:
   * comment (string) - server comment for requests.
   * id (string MD5 HEX hash) - unique request idenifier.
   * errno (int) - error number. errno == 0 if requests successfull.
-  * errtstr (string) - comment for error issue, errstr == null if requests successfull.
+  * errstr (string) - comment for error issue, errstr == null if requests successfull.
   * account_status - 0 account disabled, 1 account enabled, -1 unknown status.