Update comments to better reflect code

Author: kirrus

postfixadmin-installer

@@ -21,7 +21,7 @@ use Digest::SHA qw/sha1_hex/;
 use Term::ANSIColor;
 use Getopt::Long qw/:config auto_version/;
 
-# Check OS release and dovecot availablity. 
+# Check OS release
 my $pfa_os_release = 'other_noissue';
 if ( -f "/etc/issue" ) {
 	if (`grep "Linux 8" /etc/issue`) { $pfa_os_release = 'jessie'; }
@@ -36,12 +36,13 @@ if ( $pfa_os_release == 'jessie' ) { $dovecot_package_name = 'dovecot-core'; }
 my $postfixadminDir = "/var/www/postfixadmin";
 if ( $pfa_os_release == "jessie") { $postfixadminDir = "/var/www/html/postfixadmin"; }
 
+# Check dovecot availability
 if(availableDovecotVersion() !~ /^2\./){
   print STDERR "This script will not work on versions of Dovecot other than 2.x (you have ".availableDovecotVersion().")\nExiting.\n";
   exit 1;
 }
 
-
+# Config starts here
 our $VERSION = "0.20160423 (Jessie; Dovecot 2.x)";
 
 my $f_log = '/tmp/postfixadmin-installer.log';