Fix GitHub Pages link and update demo URL in README

Author: mcbride-clint

README.md

@@ -1,10 +1,8 @@
 # PdfWorker
 
-[![Deploy to GitHub Pages](https://github.com/USERNAME/PdfWorker/actions/workflows/deploy.yml/badge.svg)](https://github.com/USERNAME/PdfWorker/actions/workflows/deploy.yml)
+[![Deploy to GitHub Pages](https://github.com/USERNAME/PdfWorker/actions/workflows/deploy.yml/badge.svg)](https://github.com/mcbride-clint/PdfWorker/actions/workflows/deploy.yml)
 
-**Live demo:** https://USERNAME.github.io/PdfWorker/
-
-> Replace `USERNAME` above with your GitHub username after you push the repository.
+**Live demo:** https://mcbride-clint.github.io/PdfWorker/
 
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