Fix double word typos.
diff --git a/Doc/lib/libcookie.tex b/Doc/lib/libcookie.tex
index 43d5ada..f872ed2 100644
--- a/Doc/lib/libcookie.tex
+++ b/Doc/lib/libcookie.tex
@@ -12,7 +12,7 @@
string-only cookies, and provides an abstraction for having any serializable
data-type as cookie value.
-The module formerly strictly applied the parsing rules described in in
+The module formerly strictly applied the parsing rules described in
the \rfc{2109} and \rfc{2068} specifications. It has since been discovered
that MSIE 3.0x doesn't follow the character rules outlined in those
specs. As a result, the parsing rules used are a bit less strict.