Fix summary explanation for Find method (#2002)

Author: mairaw

xml/System.Data/DataRowCollection.xml

@@ -482,7 +482,8 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Docs>
-        <summary>Gets a specified <see cref="T:System.Data.DataRow" /> using the <see cref="P:System.Data.DataTable.PrimaryKey" /> index (performance should be an O(log n) operation).</summary>
+        <summary>Gets a <see cref="T:System.Data.DataRow" /> using the specified <see cref="P:System.Data.DataTable.PrimaryKey" /> value.</summary>
+        <remarks>Peformance should be an O(log n) operation.</remarks>
       </Docs>
     </MemberGroup>
     <Member MemberName="Find">
@@ -909,4 +910,4 @@
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>