Fix typo in config

README.md

@@ -45,7 +45,7 @@ to monitor. It can be just a domain, an IP or an actual URL, including port and
 
 If you want to override the default status code for a check, this is the syntax:
 
-	statuscode[gist.github.com]=302
+	statuscode[gists]=302
 
 The first part between the square brackets must match the `urls[]` part.
 
@@ -101,4 +101,4 @@ asked me to make it public, but before I did that I polished it up a bit.
 [4]: screenshots/many.png
 [5]: https://acme.com/software/micro_httpd/
 [6]: https://raymii.org
-[8]: https://raymii.org/s/software/Bash_HTTP_Monitoring_Dashboard.html
\ No newline at end of file
+[8]: https://raymii.org/s/software/Bash_HTTP_Monitoring_Dashboard.html