[PATCH v2] doc: updated json sample code for fifo interface

[Lukasz Krakowiak <lukaszx.krakowiak@intel.com>]

Updated doc for JSON sample code related to vm_power_manager
fifo interface: "command": "destroy", "command": "power".
Corrected typo in doc vm_power_management.rst: 'json' instead
of 'jason'.

---
v2:
* coding style improved

Signed-off-by: Lukasz Krakowiak <lukaszx.krakowiak@intel.com>
---
 doc/guides/sample_app_ug/vm_power_management.rst | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/doc/guides/sample_app_ug/vm_power_management.rst b/doc/guides/sample_app_ug/vm_power_management.rst
index 14d432e78..0182a92b3 100644
--- a/doc/guides/sample_app_ug/vm_power_management.rst
+++ b/doc/guides/sample_app_ug/vm_power_management.rst
@@ -384,7 +384,7 @@ the file.
 
 The fifo is at /tmp/powermonitor/fifo
 
-The jason string can be a policy or instruction, and takes the following
+The json string can be a policy or instruction, and takes the following
 format:
 
   .. code-block:: javascript
@@ -597,7 +597,7 @@ Profile destroy example:
 
   .. code-block:: javascript
 
-    {"profile": {
+    {"policy": {
       "name": "ubuntu",
       "command": "destroy",
     }}
@@ -606,8 +606,9 @@ Power command example:
 
   .. code-block:: javascript
 
-    {"command": {
+    {"instruction": {
       "name": "ubuntu",
+      "command": "power",
       "unit": "SCALE_MAX",
       "resource_id": 10
     }}
-- 
2.19.2.windows.1