Add proper syntax highlighting to README

6 jobs for main in 7 minutes and 14 seconds (queued for 1 second)
Status Name Job ID Coverage
  Lint
passed codestyle #282721

00:04:57

passed reuse #282720

00:01:51

 
  Test
failed test: [debian:10] #282725
docker

00:01:35

failed test: [debian:9] #282724
docker

00:01:35

failed test: [ubuntu:18.04] #282722
docker

00:02:14

failed test: [ubuntu:20.04] #282723
docker

00:02:13

 
Name Stage Failure
failed
test: [debian:10] Test
$ pipenv install --dev
Warning: the environment variable LANG is not set!
We recommend setting this in ~/.profile (or equivalent) for proper expected behavior.
Warning: Python 3.9 was not found on your system...
Neither 'pyenv' nor 'asdf' could be found to install Python.
You can specify specific versions of Python with:
$ pipenv --python path/to/python
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
test: [ubuntu:20.04] Test
$ pipenv install --dev
Warning: the environment variable LANG is not set!
We recommend setting this in ~/.profile (or equivalent) for proper expected behavior.
Warning: Python 3.9 was not found on your system...
Neither 'pyenv' nor 'asdf' could be found to install Python.
You can specify specific versions of Python with:
$ pipenv --python path/to/python
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
test: [debian:9] Test
$ pipenv install --dev
Warning: the environment variable LANG is not set!
We recommend setting this in ~/.profile (or equivalent) for proper expected behavior.
Warning: Python 3.9 was not found on your system...
Neither 'pyenv' nor 'asdf' could be found to install Python.
You can specify specific versions of Python with:
$ pipenv --python path/to/python
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
test: [ubuntu:18.04] Test
$ pipenv install --dev
Warning: the environment variable LANG is not set!
We recommend setting this in ~/.profile (or equivalent) for proper expected behavior.
Warning: Python 3.9 was not found on your system...
Neither 'pyenv' nor 'asdf' could be found to install Python.
You can specify specific versions of Python with:
$ pipenv --python path/to/python
Cleaning up file based variables
ERROR: Job failed: exit code 1