Merge pull request #59 from autifyhq/hiroki/use-autify-back

Update window.history.back() to autify.back()

Author: harokki

content/en/snippets/others/back_forward_reload.md

@@ -8,7 +8,7 @@ Simulate back, forward, reload on a browser.
 
 ```js
 /* Back */
-window.history.back();
+autify.back();
 
 /* Forward */
 window.history.forward();

content/ja/snippets/others/back_forward_reload.md

@@ -8,7 +8,7 @@ ie_support: true
 
 ```js
 /* 戻る */
-window.history.back();
+autify.back();
 
 /* 進む */
 window.history.forward();