Merge branch 'desc_fix' into 'master'

sane-canon: update broken link in desc file.

See merge request sane-project/backends!752

doc/descriptions/canon.desc

@@ -13,7 +13,7 @@
 :version "1.12 (unmaintained)"	; version of backend
 ;:status :good			; :alpha, :beta, :stable, :new
 
-:url "http://www.rzg.mpg.de/~mpd/sane/" ; backend home page
+:url "https://web.archive.org/web/20051103043526/http://www.rzg.mpg.de/~mpd/sane/" ; backend home page
 
 :devicetype :scanner