Fix demo link

Author: alekswebnet

README.md

@@ -16,7 +16,7 @@ A web component for viewing pdf files in the browser. The package is based on [P
 
 [Api](https://alekswebnet.github.io/pdfjs-viewer-element/#api)
 
-[Live examples](https://alekswebnet.github.io/pdfjs-viewer-element/#api)
+[Live examples](https://alekswebnet.github.io/pdfjs-viewer-element/#demo)
 
 ## Install