feat: changed deprecated JS property #31

* changed `document.domain` to `location.hostname`

csrfguard/src/main/resources/csrfguard.js

@@ -269,7 +269,7 @@ if (owaspCSRFGuardScriptHasLoaded !== true) {
  }
  }
 
- result = isValidDomain(document.domain, domain);
+ result = isValidDomain(location.hostname, domain);
  /* explicitly skip anchors */
  } else if (src.charAt(0) === '#') {
  result = false;