minor #133 Tweaked the wording in AboutCommand (lyrixx)

This PR was merged into the 1.0-dev branch.

Discussion
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Tweaked the wording in AboutCommand

Commits
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e8e490a Tweaked the wording in AboutCommand

Author: javiereguiluz

src/Symfony/Installer/AboutCommand.php

@@ -66,7 +66,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
    <comment>%3\$s new blog 2.5.6</comment>
 
- Create a <info>Symfony demo application</info> to learn how it works:
+ Create a <info>demo application</info> to learn how a Symfony application works:
 
    <comment>%3\$s demo</comment>