[GitHub] spark pull request #22761: [MINOR][DOC] Spacing items in migration guide for...

[HyukjinKwon]

GitHub user HyukjinKwon opened a pull request:

    https://github.com/apache/spark/pull/22761

    [MINOR][DOC] Spacing items in migration guide for readability and 
consistency

    ## What changes were proposed in this pull request?
    
    Currently, migration guide has no space between each item which looks too 
compact and hard to read. Some of items already had some spaces between them in 
the migration guide. This PR suggest to format them consistently for 
readability.
    
    Before:
    
    ![screen shot 2018-10-18 at 9 49 12 
am](https://user-images.githubusercontent.com/6477701/47126706-4c43da80-d2bc-11e8-966f-ad804ab23174.png)
    
    After:
    
    ![screen shot 2018-10-18 at 9 53 55 
am](https://user-images.githubusercontent.com/6477701/47126708-4fd76180-d2bc-11e8-9aa5-546f0622ca20.png)
    
    ## How was this patch tested?
    
    Manually tested:
    


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

    $ git pull https://github.com/HyukjinKwon/spark minor-migration-doc

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

    https://github.com/apache/spark/pull/22761.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #22761
    
----
commit e1d6a0a9985d0351e4dcc2f868141a079694432d
Author: hyukjinkwon <gurwls223@...>
Date:   2018-10-18T01:56:16Z

    Format migration guide for readability

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