dpkg-source(1): wording improvement

Use "special" instead of "particular" to qualify the "3.0 (custom)"
format.

Reported-by: Ben Pfaff <blp@nicira.com>

debian/changelog

@@ -40,6 +40,8 @@ dpkg (1.16.1) UNRELEASED; urgency=low
     has applied during --before-build.
   * Fix two possible causes for the assertion failure "pigp->trigpend_head".
     LP: #798793, #424358 Closes: #560251
+  * Use "special" instead of "particular" to qualify the "3.0 (custom)" format
+    in dpkg-source(1). Closes: #631435
 
   [ Guillem Jover ]
   * Install deb-src-control(5) man pages in dpkg-dev. Closes: #620520

man/dpkg-source.1

@@ -534,7 +534,7 @@ Skips extraction of the debian tarball on top of the upstream sources.
 Do not apply patches at the end of the extraction.
 .
 .SS Format: 3.0 (custom)
-This format is particular. It doesn't represent a real source package
+This format is special. It doesn't represent a real source package
 format but can be used to create source packages with arbitrary files.
 .PP
 .B Build options