fix edit buttom not found bug.

Author: BBong119

_config.yml

@@ -1,4 +1,4 @@
-repositoryUrl: https://github.com/Dynamsoft/web-twain-docs/master
+repositoryUrl: https://github.com/Dynamsoft/web-twain-docs/blob/master
 firstLevelUrl: /web-twain
 docFullPath: https://www.dynamsoft.com/web-twain/docs
 productUrl: https://www.dynamsoft.com/Products/WebTWAIN_Overview.aspx
@@ -27,4 +27,4 @@ dnt_icon: /web-twain/docs/assets/img-icon/icon-dnt.svg
 
 baseurl: /web-twain/docs/
 
-theme: jekyll-theme-cayman
+theme: jekyll-theme-cayman