Format tweaks for asciidoc.

Some documentation "options" were followed by independent preformatted
paragraphs. Now they are associated plain text paragraphs. The
difference is clear in the generated html.

Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/Documentation/git-whatchanged.txt b/Documentation/git-whatchanged.txt
index f02f939..641cb7e 100644
--- a/Documentation/git-whatchanged.txt
+++ b/Documentation/git-whatchanged.txt
@@ -47,9 +47,9 @@
 	By default, differences for merge commits are not shown.
 	With this flag, show differences to that commit from all
 	of its parents.
-
-	However, it is not very useful in general, although it
-	*is* useful on a file-by-file basis.
++
+However, it is not very useful in general, although it
+*is* useful on a file-by-file basis.
 
 Examples
 --------