[master] b7914209a Minor polish in the statement about cache optimization in "Changes".

[Geoff Simmons]

commit b7914209a4d7a004491455a7f4ea0107ebdaeaa7
Author: Geoff Simmons <geoff at uplex.de>
Date:   Mon Mar 11 12:58:38 2019 +0100

    Minor polish in the statement about cache optimization in "Changes".

diff --git a/doc/sphinx/whats-new/changes-trunk.rst b/doc/sphinx/whats-new/changes-trunk.rst
index c1fdb270e..bfbe962da 100644
--- a/doc/sphinx/whats-new/changes-trunk.rst
+++ b/doc/sphinx/whats-new/changes-trunk.rst
@@ -20,9 +20,10 @@ merged, may be found in the `change log`_.
 varnishd
 ========
 
-Cache lookups have undergone a number of optimizations, among them to
-reduce lock contention, and to shorten and simplify the critical
-section of lookup code.
+Cache lookups have undergone a number of optimizations, among them
+reduction in lock contention, and to shorten and simplify the critical
+section of lookup code. We expect that this will improve performance
+and scalability.
 
 We have added a "watchdog" for thread pools that will panic the worker
 process, causing it to restart, if scheduling tasks onto worker