Correct parameter name in ImageLockModeUserInputBuf description

Author: mriehm

xml/System.Drawing.Imaging/ImageLockMode.xml

@@ -142,7 +142,7 @@
       </ReturnValue>
       <MemberValue>4</MemberValue>
       <Docs>
-        <summary>Specifies that the buffer used for reading or writing pixel data is allocated by the user. If this flag is set, the <paramref name="flags" /> parameter of the <see cref="Overload:System.Drawing.Bitmap.LockBits" /> method serves as an input parameter (and possibly as an output parameter). If this flag is cleared, then the <paramref name="flags" /> parameter serves only as an output parameter.</summary>
+        <summary>Specifies that the buffer used for reading or writing pixel data is allocated by the user. If this flag is set, the <paramref name="bitmapData" /> parameter of the <see cref="Overload:System.Drawing.Bitmap.LockBits" /> method serves as an input parameter (and possibly as an output parameter). If this flag is cleared, then the <paramref name="bitmapData" /> parameter serves only as an output parameter.</summary>
       </Docs>
     </Member>
     <Member MemberName="WriteOnly">