dev-environment: Fix example formatting

Use proper markdown with `obmcutil state` example,
also fix 'Note' formatting under that example.

Change-Id: I45dcaf282d422f6ab8a91e554ef75f6bcbb6633f
Signed-off-by: Alexander Amelkin <a.amelkin@yadro.com>
diff --git a/development/dev-environment.md b/development/dev-environment.md
index ba2788b..37f96d8 100644
--- a/development/dev-environment.md
+++ b/development/dev-environment.md
@@ -110,13 +110,14 @@
   the obmcutil tool to check the state of the OpenBMC state services. When you
   see the following then you have successfully booted to "Ready" state.
 
-  `obmcutil state`
+  ```
+  root@openbmc:~# obmcutil state
+  CurrentBMCState     : xyz.openbmc_project.State.BMC.BMCState.Ready
+  CurrentPowerState   : xyz.openbmc_project.State.Chassis.PowerState.Off
+  CurrentHostState    : xyz.openbmc_project.State.Host.HostState.Off
+  ```
 
-  > CurrentBMCState     : xyz.openbmc_project.State.BMC.BMCState.Ready
-  > CurrentPowerState   : xyz.openbmc_project.State.Chassis.PowerState.Off
-  > CurrentHostState    : xyz.openbmc_project.State.Host.HostState.Off
-
-    **Note** To exit (and kill) your QEMU session run: `ctrl+a x`
+  **Note** To exit (and kill) your QEMU session run: `ctrl+a x`
 
 ## Download and Install SDK