Update xml/System.Buffers/StandardFormat.xml

Co-Authored-By: Maira Wenzel <[email protected]>

Author: Ron Petrusha

xml/System.Buffers/StandardFormat.xml

@@ -515,7 +515,7 @@ Two <xref:System.Buffers.StandardFormat> instances are unequal if their <xref:Sy
       </ReturnValue>
       <Docs>
         <summary>Gets the character component of the format.</summary>
-        <value>To be added.</value>
+        <value>The character component of the format.</value>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>