DOC: configuration: http-check send was missing from matrix
The new directive and its doc were added by commit 8acb1284b ("MINOR:
checks: Add a way to send custom headers and payload during http chekcs")
but the index was not updated.
diff --git a/doc/configuration.txt b/doc/configuration.txt
index c75bb55..d72dca6 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -2788,6 +2788,7 @@
http-check connect X - X X
http-check disable-on-404 X - X X
http-check expect X - X X
+http-check send X - X X
http-check send-state X - X X
http-check set-var X - X X
http-check unset-var X - X X