minor #14485 [FrameworkBundle] Fix typo in variable name (paulandrieux)

This PR was merged into the 2.6 branch.

Discussion
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[FrameworkBundle] Fix typo in variable name

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | ~
| License       | MIT
| Doc PR        | ~

This come from 3928ed5fce (diff-20b057eaf0a977f7a2ef2b874307279aR120)

Commits
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bb9c4ee Fix typo in variable name

src/Symfony/Bundle/FrameworkBundle/Command/ServerRunCommand.php

@@ -117,7 +117,7 @@ EOF
         $output->writeln(sprintf("Server running on <info>http://%s</info>\n", $address));
         $output->writeln('Quit the server with CONTROL-C.');
 
-        if (null === $builder = $this->createPhpProcessBuilder($output, $adress, $input->getOption('router'), $env)) {
+        if (null === $builder = $this->createPhpProcessBuilder($output, $address, $input->getOption('router'), $env)) {
             return 1;
         }