Fix typo in "Computing the table height" (#9794)

Author: alexandergitter

css-tables-3/Overview.bs

@@ -1918,7 +1918,7 @@ spec:css-sizing-3; type:property; text:box-sizing
 				If their collective size ends up being greater than the specified 'height', the specified 'height' will have no effect.
 
 			The <strong>minimum height of a row</strong> is the maximum of:
-			<ul><li>the computed 'height' (if definite, percentages being considered 0px) of its corresponding table-row (if nay)
+			<ul><li>the computed 'height' (if definite, percentages being considered 0px) of its corresponding table-row (if any)
 				<li>the computed 'height' of each cell spanning the current row exclusively (if definite, percentages being treated as 0px), and
 				<li>the minimum height (<a>ROWMIN</a>) required by the cells spanning the row.</ul>