Update README.md: Fix opal url

The .org url leads to a page about online casinos.
opal · Feb 8, 2019 · 2565073 · 2565073
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Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/README.md b/README.md
@@ -1,6 +1,6 @@
 # Opal Sprockets
 
-_Adds sprockets support for [Opal](http://opalrb.org)._
+_Adds sprockets support for [Opal](http://opalrb.com)._
 
 ## Installation