Fix see elements of BitOperations.RoundUpToPowerOf2 (#7983)

Author: xparadoxical

xml/System.Numerics/BitOperations.xml

@@ -965,7 +965,7 @@ This method is similar in behavior to the x86 instruction ROR.
       </Parameters>
       <Docs>
         <param name="value">The value to round up to a power of two.</param>
-        <summary>Rounds the specified <see langword="T:System.UInt32" /> value up to a power of two.</summary>
+        <summary>Rounds the specified <see cref="T:System.UInt32" /> value up to a power of two.</summary>
         <returns>The smallest power of two that's greater than or equal to <paramref name="value" />.
             If <paramref name="value" /> is 0 or the result overflows, returns 0.</returns>
         <remarks>To be added.</remarks>
@@ -1001,7 +1001,7 @@ This method is similar in behavior to the x86 instruction ROR.
       </Parameters>
       <Docs>
         <param name="value">The value to round up to a power of two.</param>
-        <summary>Rounds the specified <see langword="T:System.UInt64" /> value up to a power of two.</summary>
+        <summary>Rounds the specified <see cref="T:System.UInt64" /> value up to a power of two.</summary>
         <returns>The smallest power of two that's greater than or equal to <paramref name="value" />.
 
 If <paramref name="value" /> is 0 or the result overflows, returns 0.</returns>