Remove extra > in documentation (#3488)

Author: inkel

xml/System.Net.Mail/SmtpClient.xml

@@ -1547,7 +1547,7 @@ The classes shown in the following table are used to construct email messages th
           <format type="text/markdown"><![CDATA[  
   
 ## Remarks  
- This operation will not block. The returned <xref:System.Threading.Tasks.Task>> object will complete once the message has been sent.  
+ This operation will not block. The returned <xref:System.Threading.Tasks.Task> object will complete once the message has been sent.  
   
  ]]></format>
         </remarks>
@@ -1598,7 +1598,7 @@ The classes shown in the following table are used to construct email messages th
           <format type="text/markdown"><![CDATA[  
   
 ## Remarks  
- This operation will not block. The returned <xref:System.Threading.Tasks.Task>> object will complete once the message has been sent.  
+ This operation will not block. The returned <xref:System.Threading.Tasks.Task> object will complete once the message has been sent.  
   
  ]]></format>
         </remarks>