Update README.chromium.

Capitalize Skia and use new site url.

Review URL: https://codereview.chromium.org/1183503002

README.chromium

@@ -1,5 +1,5 @@
-Name: skia
-URL: http://code.google.com/p/skia
+Name: Skia
+URL: https://skia.org/
 Version: unknown
 Security Critical: yes
 License: BSD