Fix section name for the maxQueued config option

The section is 'httpd' and not 'http'.

Change-Id: I44f6a542f0f77fd063c08d02e4f7eba8335f3df5
Signed-off-by: Edwin Kempin <ekempin@google.com>
diff --git a/docs/Scaling.md b/docs/Scaling.md
index 0ad9bbb..596c64b 100644
--- a/docs/Scaling.md
+++ b/docs/Scaling.md
@@ -90,7 +90,7 @@
 installations have had serious "Failed to dispatch" errors which lead to 100%CPU
 and filled up logs, requiring a server reboot to recover. This can triggered by
 long running RPCs building causing the http queue to be used. One way to
-workaround this issue is to set http.maxqueued = 0. Alternatively, you can use
+workaround this issue is to set httpd.maxQueued = 0. Alternatively, you can use
 [Tomcat]
 (https://gerrit-review.googlesource.com/#/c/35010/6/Documentation/install-tomcat.txt)
 instead to replace Jetty.