remove the period

Author: tbrowder

doc/Language/5to6-nutshell.pod6

@@ -2,7 +2,7 @@
 
 =TITLE Perl 5 to Perl 6 guide - In a Nutshell
 
-=SUBTITLE How do I do what I used to do? (Perl 6 in a nutshell.)
+=SUBTITLE How do I do what I used to do? (Perl 6 in a nutshell)
 
 This page attempts to provide a fast-path to the changes in syntax and
 semantics from Perl 5 to Perl 6. Whatever worked in Perl 5 and must be written