Fixed minor typo in interactive example (extra '.'s in '...' prompts)
diff --git a/Doc/lib/libre.tex b/Doc/lib/libre.tex
index 0d9b702..e6cbc55 100644
--- a/Doc/lib/libre.tex
+++ b/Doc/lib/libre.tex
@@ -598,8 +598,8 @@
 
 \begin{verbatim}
 >>> def dashrepl(matchobj):
-....    if matchobj.group(0) == '-': return ' '
-....    else: return '-'
+...     if matchobj.group(0) == '-': return ' '
+...     else: return '-'
 >>> re.sub('-{1,2}', dashrepl, 'pro----gram-files')
 'pro--gram files'
 \end{verbatim}