Fix langword references

Author: ericstj

xml/System.Runtime.CompilerServices/UnsafeAccessorTypeAttribute.xml

@@ -53,11 +53,11 @@
           <para>This attribute should only be applied to parameters or return types of methods that are typed as follows:</para>
           <para>
             <ul>
-              <li>References should be typed as <lang>object</lang>.</li>
-              <li>Byref arguments should be typed with <lang>in</lang>, <lang>ref</lang>, or <lang>out</lang> to <lang>object</lang>.</li>
-              <li>Unmanaged pointers should be typed as <lang>void*</lang>.</li>
-              <li>Byref arguments to reference types or arrays should be typed with <lang>in</lang>, <lang>ref</lang>, or <lang>out</lang> to <lang>object</lang>.</li>
-              <li>Byref arguments to unmanaged pointer types should be typed with <lang>in</lang>, <lang>ref</lang>, or <lang>out</lang> to <lang>void*</lang>.</li>
+              <li>References should be typed as <see langword="object" />.</li>
+              <li>Byref arguments should be typed with <see langword="in" />, <see langword="ref" />, or <see langword="out" /> to <see langword="object" />.</li>
+              <li>Unmanaged pointers should be typed as <see langword="void*" />.</li>
+              <li>Byref arguments to reference types or arrays should be typed with <see langword="in" />, <see langword="ref" />, or <see langword="out" /> to <see langword="object" />.</li>
+              <li>Byref arguments to unmanaged pointer types should be typed with <see langword="in" />, <see langword="ref" />, or <see langword="out" /> to <see langword="void*" />.</li>
             </ul> Value types are not supported.</para>
           <para>Due to lack of variance for byrefs, returns involving byrefs are not supported. This specifically means that accessors for fields of inaccessible types are not supported.</para>
         </remarks>