dpkg-trigger(1), deb-triggers(5): update reference to triggers.txt.gz

The file has been moved in dpkg-dev, fix the location.

debian/changelog

@@ -19,6 +19,8 @@ dpkg (1.15.7.2) UNRELEASED; urgency=low
     to place the packages on the mirrors and by indicating that the Debian
     policy offers a list of allowed values for section and priority.
     Closes: #575410
+  * Update reference to triggers.txt.gz in dpkg-trigger(1) and deb-triggers(5)
+    to match the new location. Closes: #580774
 
   [ Guillem Jover ]
   * Add powerpcspe support to ostable and triplettable.

man/deb-triggers.5

@@ -49,4 +49,4 @@ package.
 .SH SEE ALSO
 .BR dpkg\-trigger (1),
 .BR dpkg (1),
-.BR /usr/share/doc/dpkg/triggers.txt.gz .
+.BR /usr/share/doc/dpkg-dev/triggers.txt.gz .

man/dpkg-trigger.1

@@ -58,5 +58,5 @@ the trigger.
 Just test, do not actually change anything.
 .
 .SH SEE ALSO
-.BR dpkg "(1), " deb-triggers "(5), " /usr/share/doc/dpkg/triggers.txt.gz .
+.BR dpkg "(1), " deb-triggers "(5), " /usr/share/doc/dpkg-dev/triggers.txt.gz .