DOCSP-43376 removing duplicate word (#173)

Author: mdb-ashley

source/mongoimport.txt

@@ -413,11 +413,10 @@ Options
    Specifies the file type to import. The default format is :term:`JSON`,
    but it's possible to import :term:`CSV` and :term:`TSV` files.
 
-   The ``csv`` parser accepts that data that complies with RFC
-   :rfc:`4180`. As a result, backslashes are *not* a valid escape
-   character. If you use double-quotes to enclose fields in the CSV
-   data, you must escape internal double-quote marks by prepending
-   another double-quote.
+   The ``csv`` parser accepts that data that complies with :rfc:`4180`. 
+   As a result, backslashes are *not* a valid escape character. If you use 
+   double-quotes to enclose fields in the CSV data, you must escape internal 
+   double-quote marks by prepending another double-quote.