doc: Mark perlcritic as an optional author test dependency

README

@@ -78,7 +78,7 @@ To run the test suite («make check»):
   Test::Pod perl module (optional)
   Test::Spelling perl module (optional, author)
   Test::Strict perl module (optional)
-  Test::Perl::Critic perl module (optional)
+  Test::Perl::Critic perl module (optional, author)
   aspell (optional, author)
   aspell-en (optional, author)
 

debian/changelog

@@ -92,6 +92,7 @@ dpkg (1.18.8) UNRELEASED; urgency=medium
       strongly discouraged, for being redundant, tending to get out-of-sync,
       and their format being inconsistent. In addition most got already
       removed in the past for the man pages.
+    - Mark perlcritic as an optional author test dependency in the README.
 
   [ Updated programs translations ]
   * German (Sven Joachim).