more malformed xml

Author: Ron Petrusha

xml/System/Memory`1.xml

@@ -524,7 +524,7 @@ The garbage collector will not move the memory until the returned <xref:T:System
 
 -or-
 
-<paramref name="length" /> is greater than <see cref="P:Memory`1.Length"> - <paramref name="start" />        
+<paramref name="length" /> is greater than <see cref="P:Memory`1.Length" /> - <paramref name="start" />        
         </exception>
       </Docs>
     </Member>
@@ -577,7 +577,7 @@ The garbage collector will not move the memory until the returned <xref:T:System
         <remarks>
           <format type="text/markdown"><![CDATA[  
 
-Because a call to the <xref="System.Memory%601.ToArray%2A> method performs a heap allocation, it should generally be avoided. However, it it sometimes necessary to take advantage of functionality that is only available for arrays.
+Because a call to the <xref="System.Memory%601.ToArray%2A> method performs a heap allocation, it should generally be avoided. However, it is sometimes necessary to take advantage of functionality that is only available for arrays.
 
          ]]></format>
         </remarks>