Fix docs build errors

Fix shocco errors during docs generation

Closes-Bug: 1362691
Change-Id: I2b7fb008c89f0b4e7280b2d0a054320765e83e47
diff --git a/lib/neutron b/lib/neutron
index ec42677..bd3b6d6 100644
--- a/lib/neutron
+++ b/lib/neutron
@@ -177,9 +177,10 @@
 
 # Distributed Virtual Router (DVR) configuration
 # Can be:
-#     legacy   - No DVR functionality
-#     dvr_snat - Controller or single node DVR
-#     dvr      - Compute node in multi-node DVR
+# - ``legacy``   - No DVR functionality
+# - ``dvr_snat`` - Controller or single node DVR
+# - ``dvr``      - Compute node in multi-node DVR
+#
 Q_DVR_MODE=${Q_DVR_MODE:-legacy}
 if [[ "$Q_DVR_MODE" != "legacy" ]]; then
     Q_ML2_PLUGIN_MECHANISM_DRIVERS=openvswitch,linuxbridge,l2population