[css-tables-3] Fix typo and restore definition of baseline max-content width (#13776)

Author: stasoid

css-tables-3/Overview.bs

@@ -1566,7 +1566,11 @@ spec:css-display-4; type:property; text:display
 						where the contribution of a cell is the result of taking the following steps:
 					<ol>
 						<li>Define the baseline min-content width
-							as the sum of the max-content widths based on cells of span up to N-1 
+							as the sum of the min-content widths based on cells of span up to N-1
+							of all columns that the cell spans.
+
+						<li>Define the baseline max-content width
+							as the sum of the max-content widths based on cells of span up to N-1
 							of all columns that the cell spans.
 
 						<li>Define the baseline border spacing as the sum of the horizontal