man: Say value instead of option in deb-control(5)

debian/changelog

@@ -1,6 +1,7 @@
 dpkg (1.18.5) UNRELEASED; urgency=medium
 
-  *
+  * Documentation:
+    - Say value instead of option in deb-control(5).
 
  -- Guillem Jover <guillem@debian.org>  Fri, 25 Dec 2015 14:20:16 +0100
 

man/deb-control.5

@@ -108,8 +108,8 @@ Common architectures are \fBamd64\fP, \fBarmel\fP, \fBi386\fP, \fBpowerpc\fP,
 etc.
 Note that the
 .B all
-option is meant for packages that are architecture independent. Some examples
-of this are shell and Perl scripts, and documentation.
+value is meant for packages that are architecture independent.
+Some examples of this are shell and Perl scripts, and documentation.
 .TP
 .BI Origin: " name"
 The name of the distribution this package is originating from.