(Remember): Texinfo usage fix.

man/org.texi

@@ -969,8 +969,8 @@ Before inserting the text into a tree, the function ensures that the
 text has a headline, i.e. a first line that starts with a @samp{*}.
 If not, a headline is constructed from the current date and some
 additional data.  If the variable @code{org-adapt-indentation} is
-non-nil, the entire text is also indented so that it starts in the
-same column as the headline (after the asterisks).
+non-@code{nil}, the entire text is also indented so that it starts in
+the same column as the headline (after the asterisks).
 
 @node TODO items, Timestamps, Hyperlinks, Top
 @chapter TODO items