openbmc-systemd: fixed broken link.

Corrected markdown syntax mismatch and fixed broken URL.

Closes openbmc/docs#81.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I13df137c9241a566a69500fb8608806b30ce2209
diff --git a/architecture/openbmc-systemd.md b/architecture/openbmc-systemd.md
index fc5c261..39ed729 100644
--- a/architecture/openbmc-systemd.md
+++ b/architecture/openbmc-systemd.md
@@ -113,7 +113,7 @@
 
 The `obmc-host-quiesce@.target` is utilized in host error scenarios. When the
 `obmc-host-quiesce@0.target` is entered, it puts the host state D-Bus
-[object][https://github.com/openbmc/phosphor-dbus-interfaces/blob/master/yaml/xyz/openbmc_project/state/host.interface.yaml]
+[object](https://github.com/openbmc/phosphor-dbus-interfaces/blob/master/yaml/xyz/openbmc_project/State/Host.interface.yaml)
 in a `Quiesced` state.
 
 ## Server Emergency Power Off due to Error