Update 09_running_cgi_scripts_on_plack.md

Just a couple of small edits as I browse the text. :-)
miyagawa · May 28, 2014 · a756c37 · a756c37
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diff --git a/en/09_running_cgi_scripts_on_plack.md b/en/09_running_cgi_scripts_on_plack.md
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 ## Day 9: Running CGI scripts on Plack
 
-For the couple of days we've been talking about how to convert existing CGI based applications to PSGI, and then run them as a PSGI application. Today we'd show you the ultimate way to run *any* CGI scripts as a PSGI application, most of the time unmodified.
+For the last couple of days we've been talking about how to convert existing CGI based applications to PSGI, and then run them as a PSGI application. Today we will show you the ultimate way to run *any* CGI scripts as a PSGI application, most of the time unmodified.
 
 [CGI::PSGI](http://search.cpan.org/perldoc?CGI::PSGI) is a subclass of CGI.pm to allow you a very easy migration from CGI.pm with only *a few lines of code changes* to run it on PSGI environment. But what about a messy or legacy CGI script that just prints to STDOUT a lot and is not easy to fix?
 
 [CGI::Emulate::PSGI](http://search.cpan.org/perldoc?CGI::Emulate::PSGI) is a module to run any CGI based perl program in a PSGI environment. Whatever messy/old script that prints stuff to STDOUT or directly reads HTTP headers from `%ENV` would just work because that's what CGI::Emulate::PSGI tries to emulate. The original POD of CGI::Emulate::PSGI was illustrating it like:
 
+```perl
     use CGI::Emulate::PSGI;
     CGI::Emulate::PSGI->handler(sub {
         do "/path/to/foo.cgi";
         CGI::initialize_globals() if &CGI::initialize_globals;
     });
+```
 
 to run existing CGI application that may or may not use CGI.pm (CGI.pm caches lots of environment variables so it needs `initialize_globals()` call to clear out the previous request variables).