docs: convert extras doc md->rst

Type: improvement

Change-Id: Ie3b25a86b99098d2b3a21a11fc73234c8ed589d6
Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
diff --git a/extras/vpp_if_stats/README.md b/extras/vpp_if_stats/README.md
deleted file mode 100755
index 89d60c5..0000000
--- a/extras/vpp_if_stats/README.md
+++ /dev/null
@@ -1,35 +0,0 @@
-# VPP interface stats client {#if_stats_client_doc}
-
-This is a source code and a binary of a 'thin client' to collect, 
-aggregate and expose VPP interface stats through VPP stats socket API. 
-It also provides some information about the installed VPP version.
-
-This can be used by monitoring systems that needs to grab those details 
-through a simple executable client with no dependencies.
-
-example use case: where VPP runs in a container that can't expose the socket API to the host level
-
-
-## Prerequisites (for building)
-
-**GoVPP** library (compatible with VPP 18.10)
-vpp, vpp-api, vpp-lib
-
-## Building
-
-```bash
-go get git.fd.io/govpp.git
-go build
-``` 
-
-## Using (post-build for example on linux 64bit)
-
-```bash
-./bin/vpp_if_stats_linux_amd64
-```
-
-## Output examples
-
-[JSON schema](./response_schema.json)
-[Example](./response_example.json)
-
diff --git a/extras/vpp_if_stats/README.rst b/extras/vpp_if_stats/README.rst
new file mode 100644
index 0000000..2e4dcc0
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+++ b/extras/vpp_if_stats/README.rst
@@ -0,0 +1,40 @@
+.. _if_stats_client_doc:
+
+VPP interface stats client
+==========================
+
+This is a source code and a binary of a ‘thin client’ to collect,
+aggregate and expose VPP interface stats through VPP stats socket API.
+It also provides some information about the installed VPP version.
+
+This can be used by monitoring systems that needs to grab those details
+through a simple executable client with no dependencies.
+
+example use case: where VPP runs in a container that can’t expose the
+socket API to the host level
+
+Prerequisites (for building)
+----------------------------
+
+**GoVPP** library (compatible with VPP 18.10) vpp, vpp-api, vpp-lib
+
+Building
+--------
+
+.. code:: bash
+
+   go get git.fd.io/govpp.git
+   go build
+
+Using (post-build for example on linux 64bit)
+---------------------------------------------
+
+.. code:: bash
+
+   ./bin/vpp_if_stats_linux_amd64
+
+Output examples
+---------------
+
+`JSON schema <./response_schema.json>`__
+`Example <./response_example.json>`__