[css-tables] Minor editorial change

Author: FremyCompany

css-tables-3/Overview.bs

@@ -138,8 +138,8 @@ spec:css21; type:property; text:max-width
 				the first such row group is always displayed before all other rows and row groups.
 
 				<div class="advisement">
-					If a table contains multiple elements with <code>display: table-header-group</code>,
-						only the first is rendered as a header; 
+					If a table owns multiple elements with <code>display: table-header-group</code>,
+						only the first is treated as a header; 
 						the others are treated as if they had <code>display: table-row-group</code>.
 				</div>
 
@@ -148,8 +148,8 @@ spec:css21; type:property; text:max-width
 				the fist such row group is always displayed after all other rows and row groups.
 
 				<div class="advisement">
-					If a table contains multiple elements with <code>display: table-footer-group</code>, 
-						only the first is rendered as a footer;
+					If a table owns multiple elements with <code>display: table-footer-group</code>, 
+						only the first is treated as a footer;
 						the others are treated as if they had <code>display: table-row-group</code>.
 				</div>
 
@@ -656,7 +656,7 @@ spec:css21; type:property; text:max-width
 
 		<p>
 			Once the amount of columns in a table is known, any table-row-group element must be modified such that
-				each of its rows contains enough cells to fill all the columns of the table, when taking spanning into account.
+				each of its rows owns enough cells to fill all the columns of the table, when taking spanning into account.
 			New table-cell anonymous boxes must be appended to its rows content until this condition is met.
 
 		<p>
@@ -2153,7 +2153,7 @@ spec:css21; type:property; text:max-width
 					the weighted mean of the base and the reference size 
 					that yields the correct total height.
 			<p>
-				Else, if the table contains any “auto-height” row 
+				Else, if the table owns any “auto-height” row 
 					(a row whose size is only determined by its content size and none of the specified heights), 
 					each non-auto-height row receives its reference height 
 					and auto-height rows receive their reference size plus some increment