Fix typo in universal.rst (#1037)

src/sphinx/formats/universal.rst

@@ -178,7 +178,7 @@ Currently, these task can be customized:
 Getting Started with Universal Packaging
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 By default, all files found in the ``src/universal`` directory are included in the distribution.  So, the first step
-in creating a a distribution is to place files in this directory and organize them as you'd like in them to be in the distributed package.
+in creating a distribution is to place files in this directory and organize them as you'd like in them to be in the distributed package.
 If your output format is a zip file, for example, although the distribution will consist of just one zip file, the files and directories within that zip file will reflect the same organization and structure as ``src/universal``.
 
 To add files generated by the build task to a distribution, simply add a *mapping* to the ``mappings in Universal`` setting.  Let's