Add syntax coloration

Relay-Pagination-example.md

@@ -4,7 +4,7 @@ For this example, we're going to assume a basic understanding of how [Relay pagi
 
 In a nutshell, `pagination` is implemented via graphene relay's `Connection` and `ConnectionField` pairing. With these in place, you'll see `pageInfo` available within your queries. It looks something like this:
 
-```
+```json
 "pageInfo": {
     "startCursor": "YXJyYXljb25uZWN0aW9uOjQx",
     "endCursor": "YXJyYXljb25uZWN0aW9uOjQz",
@@ -14,18 +14,18 @@ In a nutshell, `pagination` is implemented via graphene relay's `Connection` and
 ```
 
 In addition to a `cursor` element within `edges` that will show you the cursor id for each element, like so:
-```
-    edges {
-      cursor
-      node {
-         <whatever>
-      }
-    }
+```graphql
+edges {
+  cursor
+  node {
+    <whatever>
+  }
+}
 ```
 
 The basic schema below provides relay cursor-based pagination, combined with graphene_django filter capability.
 
-```
+```py
 from graphene import relay
 from graphene_django.types import DjangoObjectType
 from graphene_django.filter import DjangoFilterConnectionField
@@ -44,7 +44,7 @@ class Query(object):
 ```
 
 The following query, (the pageInfo element is included for illustration, but isn't necessary for the query to resolve):
-```
+```graphql
 {
   places(first: 3, after: "YXJyYXljb25uZWN0aW9uOjQx") {
     pageInfo {
@@ -65,7 +65,7 @@ The following query, (the pageInfo element is included for illustration, but isn
 ```
 
 Gives us:
-```
+```json
 {
   "data": {
     "places": {