Fix typo
diff --git a/Doc/lib/libfuncs.tex b/Doc/lib/libfuncs.tex
index 6e50ac7..4a0efdb 100644
--- a/Doc/lib/libfuncs.tex
+++ b/Doc/lib/libfuncs.tex
@@ -67,7 +67,7 @@
user-defined or built-in function or method, or a class object) and
the \var{args} argument must be a sequence. The \var{function} is
called with \var{args} as the argument list; the number of arguments
- is the the length of the tuple.
+ is the length of the tuple.
If the optional \var{keywords} argument is present, it must be a
dictionary whose keys are strings. It specifies keyword arguments
to be added to the end of the the argument list.