Fix a few small spacing things

IPython/nbformat/v4/v4.withref.json

@@ -1,157 +1,157 b''
 {
     "description": "custom json structure with references to generate notebook schema",
-    "notebook":{
+    "notebook": {
         "type": "object",
         "description": "notebook v4.0 root schema",
         "$schema": "http://json-schema.org/draft-03/schema",
         "id": "#notebook",
         "required": true,
         "additionalProperties": false,
-        "properties":{
+        "properties": {
             "metadata": {
                 "type": "object",
                 "id": "metadata",
                 "required": true,
                 "description": "the metadata atribute can contain any additionnal information",
                 "additionalProperties": true,
-                "properties":{
+                "properties": {
                     "name": {
                         "id": "name",
                         "description": "the title of the notebook",
                         "type": "string",
                         "id": "name",
                         "required": true
                     }
                 }
             },
             "nbformat_minor": {
                 "description": "Notebook format, minor number. Incremented for slight variation of notebook format.",
                 "type": "integer",
                 "minimum": 0,
                 "id": "nbformat_minor",
                 "required": true
             },
             "nbformat": {
                 "description": "Notebook format, major number. Incremented between backward incompatible change is introduced.",
                 "type": "integer",
                 "minimum": 4,
                 "id": "nbformat",
                 "required": true
             },
             "orig_nbformat": {
                 "description": "Original notebook format, major number.",
                 "type": "integer",
                 "minimum": 1,
                 "id": "orig_nbformat",
                 "required": false
             },
             "cells": {
                 "$schema": "http://json-schema.org/draft-03/schema",
                 "description": "array of cells of the current worksheet",
                 "type": "array",
                 "id": "#cells",
                 "required": true,
                 "items": {"$ref": "/any_cell"}
             }
         }
     },
 
     "text_cell": {
         "type": "object",
         "description": "scheme for text cel and childrenm (level only optionnal argument for HEader cell)",
         "$schema": "http://json-schema.org/draft-03/schema",
         "id": "#cell",
         "required": true,
         "additionalProperties": false,
-        "properties":{
+        "properties": {
             "cell_type": {
                 "type": "string",
                 "id": "cell_type",
                 "required": true
             },
             "level": {
                 "type": "integer",
                 "minimum": 1,
                 "maximum": 6,
                 "id": "level",
                 "required": false
             },
             "metadata": {
                 "type": "object",
                 "id": "metadata",
                 "required": false
             },
             "source": {
                 "description": "for code cell, the source code",
                 "type": ["array", "string"],
                 "id": "source",
                 "required": true,
                 "items":
                 {
                     "type": "string",
                     "description": "each item represent one line of the source code written, terminated by \n",
                     "id": "0",
                     "required": true
                 }
             }
         }
 
     },
 
     "any_cell": {
         "description": "Meta cell type that match any cell type",
-        "type": [{"$ref": "/text_cell"},{"$ref":"/code_cell"}],
+        "type": [{"$ref": "/text_cell"}, {"$ref":"/code_cell"}],
         "$schema": "http://json-schema.org/draft-03/schema"
     },
 
-    "code_cell":{
+    "code_cell": {
         "type": "object",
         "$schema": "http://json-schema.org/draft-03/schema",
         "description": "Cell used to execute code",
         "id": "#cell",
         "required": true,
         "additionalProperties": false,
-        "properties":{
+        "properties": {
             "cell_type": {
                 "type": "string",
                 "id": "cell_type",
                 "required": true
             },
             "metadata": {
                 "type": "object",
                 "id": "metadata",
                 "required": false
             },
             "collapsed": {
                 "type": "boolean",
                 "required": true
             },
             "input": {
                 "description": "user input for text cells",
                 "type": ["array", "string"],
                 "id": "input",
                 "required": true,
                 "items":
                 {
                     "type": "string",
                     "id": "input",
                     "required": true
                 }
             },
             "outputs": {
                 "description": "output for code cell, to be definied",
                 "required": true,
                 "type": "array"
             },
             "prompt_number": {
-                "type": ["integer","null"],
+                "type": ["integer", "null"],
                 "required": false,
                 "minimum": 0
             },
             "language": {
                 "type": "string",
                 "required": true
             }
         }
     }
 }