ambari pull request: Fixed missing } in configuration.md

[epishkin]

GitHub user epishkin opened a pull request:

    https://github.com/apache/ambari/pull/2

    Fixed missing } in configuration.md

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/epishkin/ambari trunk

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/ambari/pull/2.patch

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