[algorithms.parallel] Add missing \pnum

tkoeppe · tkoeppe · commit 766792134b9e · 2017-02-05T12:21:23.000Z
Fixes #1432.
diff --git a/source/algorithms.tex b/source/algorithms.tex
@@ -1198,6 +1198,7 @@
 
 \rSec1[algorithms.parallel]{Parallel algorithms}
 
+\pnum
 This section describes components that \Cpp programs may use to perform
 operations on containers and other sequences in parallel.
 
