Merge branch 'bugfix/improve_4200f' into 'master'

Add updated information on the Canoscan 4200F

Closes #63

See merge request sane-project/website!7

unsupported/canon-4200f.html

@@ -44,6 +44,9 @@ chip 2
 610800017919 D1
 0521  TH07
 XHHL7G0000GG
+This is a remarked ALI M5623D scanner controller. There is a
+<a href="https://web.archive.org/web/20030423074029/http://www.ali.com.tw/images/documentation/m5623pbrf.pdf">product brief</a> describing its features.
+
 
 chip 3
 WM
@@ -63,7 +66,7 @@ This is the controller of the scanner motor:
 http://www.allegromicro.com/datafile/6219.pdf
     </pre>
     <p>
-      Photos of the chipset <a href="http://www.nakasi.cz/canoscan4200f.zip">are available</a>.
+      Photos of the chipset <a href="https://siliconpr0n.org/archive/doku.php?id=mcmaster:ali:5623d">are available</a>.
     </p>
 
     <h2>Comments</h2>