(ciaopp) Fix to ChangeLog formatting

 One of the items in the CiaoPP ChangeLog was a level 1 title (one #)
 and that made it a different section and it was getting moved to the
 intro. Fixed.

Src-commit: 20c3400215e2065dee439a248140a4b618b4bd25

Author: Manuel Hermenegildo

CHANGELOG.md

@@ -7505,7 +7505,7 @@ Garcia).
 
 First version of typeslib. (Pedro Lopez Garcia).
 
-# (Prior changelogs not lpdoc-based, probably lost?)
+## (Prior changelogs not lpdoc-based, probably lost?)
 
 ## [0.1.1] - 1993-10-1