Doc: improve formatting

docs/index.md

@@ -81,21 +81,23 @@ in this particular example which we are using RabbitMQ the following options are
     * queue_name : name of rabbitMQ queue to use for transferring messages between main process and workers
     * serialization_method : method of serialization , could be :code:`json` or *pickle*
     * rabbitmq_configs : configurations related to rabbitmq , following is an example configuration:
-    ```
-    {
-        "connection_pool_configs": {
-            "max_size": 10,
-            "max_overflow": 10,
-            "timeout": 10,
-            "recycle": 3600,
-            "stale": 45
-        },
-        "connection_parameters": {
-            "host": "127.0.0.1"
-        }
+```
+{
+    "connection_pool_configs": {
+        "max_size": 10,
+        "max_overflow": 10,
+        "timeout": 10,
+        "recycle": 3600,
+        "stale": 45
+    },
+    "connection_parameters": {
+        "host": "127.0.0.1"
     }
-    ```
+}
+```
+
 ####2. call init() in wsgi.py
+
 open your wsgi.py file and add the following:
 ```
 import easy_job as easy_job