Update Color.xml (#11353)

Fixes #11352.

Author: rzikm

xml/System.Drawing/Color.xml

@@ -1724,7 +1724,7 @@ This example is designed to be used with a Windows Form. Paste the code into the
         <ReturnType>System.Drawing.Color</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>Gets a system-defined color that has an ARGB value of <c>#FF8FBC8B</c>.</summary>
+        <summary>Gets a system-defined color that has an ARGB value of <c>#FF8FBC8F</c>.</summary>
         <value>A <see cref="T:System.Drawing.Color" /> representing a system-defined color.</value>
         <remarks>To be added.</remarks>
       </Docs>