Mail::SpamAssassin::Conf says

           All body paragraphs (double-newline-separated blocks text) are
           turned into a line breaks removed, whitespace normalized single
           line.  Any lines longer than 2kB are split into shorter separate

That is hard to read. Try:

           All body paragraphs (double-newline-separated blocks text) are
           turned into a linebreaks-removed, whitespace-normalized, single
           line.  Any lines longer than 2kB are split into shorter separate

Here I
1. Just like you say whitespace instead of white space, I say linebreaks
instead of line breaks.

2. Added dashes for better readability.

3. Added a bonus comma.
(The above is a patch. Though not a real diff patch.)