blue changes `%autoreload 2` in jupyter ntoebooks to random hex

[Vulwsztyn]

How to reproduce:

1. create a jupyter notebook file with content:

   {
   "cells": [
   {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
   "%load_ext autoreload\n",
   "%autoreload 2"
   ]
   }
   ],
   "metadata": {
   "language_info": {
   "name": "python"
   },
   "orig_nbformat": 4
   },
   "nbformat": 4,
   "nbformat_minor": 2
   }

2. have blue and black[jupyter] installed,

3. run blue

Most env agnostic way would be:

2. run docker container run -it -vpwd:/app -w /app pyfound/black bash
3. (inside the docker) run pip install black[jupyter]; pip install blue
4. (inside the docker) run blue .

Current behaviour: The

%load_ext autoreload
%autoreload 2

in jupyter notebook gets formatted as:

""%load_ext autoreload""
'b3d554e307.'

Expected behaviour: it is left unchanged.