Fix Selectors, Level 4 typos.

See w3c#2346.

Author: patrickdark

selectors-4/Overview.bs

@@ -215,7 +215,7 @@ Selectors Overview</h2>
 		<tbody>
 			<tr>
 				<td><code>E:dir(ltr)</code>
-				<td>an element of type E in with left-to-right directionality
+				<td>an element of type E with left-to-right directionality
 					(the document language specifies how directionality is determined)
 				<td>[[#the-dir-pseudo]]
 				<td>4
@@ -705,7 +705,7 @@ Scoped Selectors</h3>
 	</div>
 
 	Note: If the context does not explicitly define any <a>:scope elements</a> for the selector,
-	the <a>scoping root</a> is a <a>:scope element</a>.
+	the <a>scoping root</a> is the <a>:scope element</a>.
 
 <h3 id="relative">
 Relative Selectors</h3>
@@ -1306,7 +1306,7 @@ Universal selector </h3>
 	The <dfn export>universal selector</dfn> is a special <a>type selector</a>,
 	that represents an element of any element type.
 
-	It is written a <a>CSS qualified name</a>
+	It is written as a <a>CSS qualified name</a>
 	with an asterisk (<code>*</code> U+002A) as the local name.
 	Like a <a>type selector</a>,
 	the <a>universal selector</a> can be qualified by a namespace,