docs: added bash and http syntax highlighting

docs/sources/http_api/dashboard.md

@@ -19,26 +19,28 @@ Creates a new dashboard or updates an existing dashboard.
 
 **Example Request for new dashboard**:
 
-    POST /api/dashboards/db HTTP/1.1
-    Accept: application/json
-    Content-Type: application/json
-    Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
+```http
+POST /api/dashboards/db HTTP/1.1
+Accept: application/json
+Content-Type: application/json
+Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
 
-    {
-      "dashboard": {
-        "id": null,
-        "title": "Production Overview",
-        "tags": [ "templated" ],
-        "timezone": "browser",
-        "rows": [
-          {
-          }
-        ],
-        "schemaVersion": 6,
-        "version": 0
-      },
-      "overwrite": false
-    }
+{
+  "dashboard": {
+    "id": null,
+    "title": "Production Overview",
+    "tags": [ "templated" ],
+    "timezone": "browser",
+    "rows": [
+      {
+      }
+    ],
+    "schemaVersion": 6,
+    "version": 0
+  },
+  "overwrite": false
+}
+```
 
 JSON Body schema:
 
@@ -47,15 +49,17 @@ JSON Body schema:
 
 **Example Response**:
 
-    HTTP/1.1 200 OK
-    Content-Type: application/json; charset=UTF-8
-    Content-Length: 78
+```http
+HTTP/1.1 200 OK
+Content-Type: application/json; charset=UTF-8
+Content-Length: 78
 
-    {
-      "slug": "production-overview",
-      "status": "success",
-      "version": 1
-    }
+{
+  "slug": "production-overview",
+  "status": "success",
+  "version": 1
+}
+```
 
 Status Codes:
 
@@ -67,14 +71,16 @@ Status Codes:
 The **412** status code is used when a newer dashboard already exists (newer, its version is greater than the version that was sent). The
 same status code is also used if another dashboard exists with the same title. The response body will look like this:
 
-    HTTP/1.1 412 Precondition Failed
-    Content-Type: application/json; charset=UTF-8
-    Content-Length: 97
+```http
+HTTP/1.1 412 Precondition Failed
+Content-Type: application/json; charset=UTF-8
+Content-Length: 97
 
-    {
-      "message": "The dashboard has been changed by someone else",
-      "status": "version-mismatch"
-    }
+{
+  "message": "The dashboard has been changed by someone else",
+  "status": "version-mismatch"
+}
+```
 
 In in case of title already exists the `status` property will be `name-exists`.
 
@@ -86,34 +92,38 @@ Will return the dashboard given the dashboard slug. Slug is the url friendly ver
 
 **Example Request**:
 
-    GET /api/dashboards/db/production-overview HTTP/1.1
-    Accept: application/json
-    Content-Type: application/json
-    Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
+```http
+GET /api/dashboards/db/production-overview HTTP/1.1
+Accept: application/json
+Content-Type: application/json
+Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
+```
 
 **Example Response**:
 
-    HTTP/1.1 200
-    Content-Type: application/json
+```http
+HTTP/1.1 200
+Content-Type: application/json
 
-    {
-      "meta": {
-        "isStarred": false,
-        "slug": "production-overview"
-      },
-      "dashboard": {
-        "id": null,
-        "title": "Production Overview",
-        "tags": [ "templated" ],
-        "timezone": "browser",
-        "rows": [
-          {
-          }
-        ],
-        "schemaVersion": 6,
-        "version": 0
+{
+  "meta": {
+    "isStarred": false,
+    "slug": "production-overview"
+  },
+  "dashboard": {
+    "id": null,
+    "title": "Production Overview",
+    "tags": [ "templated" ],
+    "timezone": "browser",
+    "rows": [
+      {
       }
-    }
+    ],
+    "schemaVersion": 6,
+    "version": 0
+  }
+}
+```
 
 ## Delete dashboard
 
@@ -123,17 +133,21 @@ The above will delete the dashboard with the specified slug. The slug is the url
 
 **Example Request**:
 
-    DELETE /api/dashboards/db/test HTTP/1.1
-    Accept: application/json
-    Content-Type: application/json
-    Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
+```http
+DELETE /api/dashboards/db/test HTTP/1.1
+Accept: application/json
+Content-Type: application/json
+Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
+```
 
 **Example Response**:
 
-    HTTP/1.1 200
-    Content-Type: application/json
+```http
+HTTP/1.1 200
+Content-Type: application/json
 
-    {"title": "Test"}
+{"title": "Test"}
+```
 
 ## Gets the home dashboard