[cssom-view] Editorial: Remove double commas

Author: frewsxcv

cssom-view/Overview.bs

@@ -1400,7 +1400,7 @@ The <dfn attribute for=HTMLElement>offsetTop</dfn> attribute must return the res
 The <dfn attribute for=HTMLElement>offsetLeft</dfn> attribute must return the result of running these steps:
 
 1. If the element is <a>the HTML <code>body</code> element</a> or does not have any associated <a>CSS layout box</a> return zero and terminate this algorithm.
-1. If the {{HTMLElement/offsetParent}} of the element is null return the x-coordinate of the left <a>border edge</a> of the first <a>CSS layout box</a> associated with the element, relative to the <a>initial containing block</a> origin, , ignoring any <a>transforms</a> that apply to the element and its ancestors, and terminate this algorithm.
+1. If the {{HTMLElement/offsetParent}} of the element is null return the x-coordinate of the left <a>border edge</a> of the first <a>CSS layout box</a> associated with the element, relative to the <a>initial containing block</a> origin, ignoring any <a>transforms</a> that apply to the element and its ancestors, and terminate this algorithm.
 1. Return the result of subtracting the x-coordinate of the left <a>padding edge</a> of the first <a>CSS layout box</a> associated with the {{HTMLElement/offsetParent}} of the element from the x-coordinate of the left <a>border edge</a> of the first <a>CSS layout box</a> associated with the element, relative to the <a>initial containing block</a> origin, ignoring any <a>transforms</a> that apply to the element and its ancestors.
 
 The <dfn attribute for=HTMLElement>offsetWidth</dfn> attribute must return the result of running these steps:
@@ -1787,6 +1787,7 @@ Antonio Gomes,
 Bj&ouml;rn H&ouml;hrmann,
 Boris Zbarsky,
 Chris Rebert,
+Corey Farwell,
 Dan Bates,
 David Vest,
 Elliott Sprehn,