Merge pull request emberjs#12583 from mcmar/patch-1

fixed typo

Author: stefanpenner

packages/ember-metal/lib/computed_macros.js

@@ -196,7 +196,7 @@ export function bool(dependentKey) {
 /**
   A computed property which matches the original value for the
   dependent property against a given RegExp, returning `true`
-  if they values matches the RegExp and `false` if it does not.
+  if the value matches the RegExp and `false` if it does not.
 
   Example