Fixup docstrings for merge().
diff --git a/Doc/lib/libheapq.tex b/Doc/lib/libheapq.tex
index 32cc25e..e403a3a 100644
--- a/Doc/lib/libheapq.tex
+++ b/Doc/lib/libheapq.tex
@@ -96,8 +96,8 @@
over the sorted values.
Similar to \code{sorted(itertools.chain(*iterables))} but returns an iterable,
-does not pull the data into memory all at once, and reduces the number of
-comparisons by assuming that each of the input streams is already sorted.
+does not pull the data into memory all at once, and assumes that each of the
+input streams is already sorted (smallest to largest).
\versionadded{2.6}
\end{funcdesc}