In ExcelReader 2.x documentation, CSV is not displayed on multiple lines like it was in 1.28

[Dan S]

While working on NIFI-14261
<https://issues.apache.org/jira/browse/NIFI-14261>, I noticed the
ExcelReader documentation in the Additional Details in the Example 1
section has CSV which is not displayed on multiple lines like it was in the
1.28 documentation.  How can that be displayed on multiple lines in
markdown?