Update README.md

Author: steipete

README.md

@@ -275,7 +275,7 @@ Please refer to [`RCTConvert+UIBarButtonItem.m`](./ios/RCTPSPDFKit/Converters/RC
 
 Also, please take a look at the [ToolbarCustomization example from our Catalog app](./samples/Catalog/Catalog.ios.js#L805).
 
-For a more detailed description of toolbar customizations, refer to our Customizing the Toolbar guide for [iOS](https://pspdfkit.com/guides/ios/current/customizing-the-interface/customizing-the-toolbar/) and [Android](https://pspdfkit.com/guides/android/current/customizing-the-interface/customizing-the-toolbar/)
+For a more detailed description of toolbar customizations, refer to our Customizing the Toolbar guide for [iOS](https://pspdfkit.com/guides/ios/current/customizing-the-interface/customizing-the-toolbar/) and [Android](https://pspdfkit.com/guides/android/current/customizing-the-interface/customizing-the-toolbar/).
 
 ### Android