fixing typo (w3c#4827)

Author: tabatkins

css-transforms-2/Overview.bs

@@ -15,7 +15,7 @@ Editor: Dean Jackson, Apple Inc http://www.apple.com/, dino@apple.com, w3cid 420
 Editor: Theresa O'Connor, Apple Inc http://www.apple.com/, eoconnor@apple.com, w3cid 40614
 Abstract: CSS transforms allows elements styled with CSS to be transformed in two-dimensional or three-dimensional space.
 Abstract:
-Abstract: This spec adds new tranform functions and properties for three-dimensional transforms, and convenience functions for simple transforms.
+Abstract: This spec adds new transform functions and properties for three-dimensional transforms, and convenience functions for simple transforms.
 Ignored Terms: SVG data types
 </pre>