Tweak readme images

They were broken after my recent project reorg PR

Author: lukeblevins

README.md

@@ -1,7 +1,7 @@
 <h1>Files UWP</h1>
 <h3>Meet Files, a brand-new file manager for Windows 10.</h3>
-<img src="Assets/FilesHome.jpg" width="800px">
-<img src="Assets/FilesDrive.jpg" width="800px">
+<img src="Files UWP/Assets/FilesHome.jpg" width="800px">
+<img src="Files UWP/Assets/FilesDrive.jpg" width="800px">
 <p>Created from the ground up to look and feel amazing, Files is built to replace the outdated Windows File Explorer.</p>
 <a href="https://youtu.be/1wSA8PYKhpA?t=124">Link to old sideloading help video</a>