man: Make explicit that deb-control(5) documents the binary control file

debian/changelog

@@ -135,6 +135,7 @@ dpkg (1.18.5) UNRELEASED; urgency=medium
       by using Unicode code points and their printable characters.
       Based on a patch by Ben Finney <ben@benfinney.id.au>.
     - Remove wrong mention that deb-control(5) support comments.
+    - Make explicit that deb-control(5) documents the binary control file.
 
   [ Updated programs translations ]
   * Dutch (Frans Spiesschaert). Closes: #822797

man/deb-control.5

@@ -21,14 +21,14 @@
 .
 .TH deb\-control 5 "2013-12-20" "Debian Project" "Debian"
 .SH NAME
-deb\-control \- Debian packages' master control file format
+deb\-control \- Debian binary packages' master control file format
 .
 .SH SYNOPSIS
 control
 .
 .SH DESCRIPTION
-Each Debian package contains the master \fIcontrol\fP file, which contains
-a number of fields.
+Each Debian binary package contains the master \fIcontrol\fP file, which
+contains a number of fields.
 Each field begins with a tag, such as
 .B Package
 or