Fix pickle doc typo
Patch #1608758
diff --git a/Doc/lib/libpickle.tex b/Doc/lib/libpickle.tex
index a8ab39e..3290641 100644
--- a/Doc/lib/libpickle.tex
+++ b/Doc/lib/libpickle.tex
@@ -519,7 +519,7 @@
version of the object. The next element of the tuple will provide
arguments for this callable, and later elements provide additional
state information that will subsequently be used to fully reconstruct
-the pickled date.
+the pickled data.
In the unpickling environment this object must be either a class, a
callable registered as a ``safe constructor'' (see below), or it must