Typo Fix (#693)

* Fix Woocommerce link in readme

* Fixed _errors.md typo

Author: Harry Eng

source/includes/_errors.md

@@ -17,4 +17,4 @@ Error Code | Meaning
 418 | I'm a teapot
 429 | Too Many Requests -- You're requesting too many kittens! Slow down!
 500 | Internal Server Error -- We had a problem with our server. Try again later.
-503 | Service Unavailable -- We're temporarially offline for maintanance. Please try again later.
+503 | Service Unavailable -- We're temporarily offline for maintenance. Please try again later.