Fix some edge cases in `string` and `show` for `Arb` and `Acb` #538

	name: Check formatting

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master

	jobs:
	format:
	runs-on: ubuntu-latest
	steps:
	- uses: julia-actions/setup-julia@v2
	with:
	version: '1'
	- uses: actions/checkout@v4
	- name: Install JuliaFormatter and format
	run: \|
	julia -e 'using Pkg; Pkg.add(PackageSpec(name="JuliaFormatter", version="1.0.9"))'
	julia -e 'using JuliaFormatter; format(["./src", "./test"], verbose=true)'
	- name: Format check
	run: \|
	julia -e '
	out = Cmd(`git diff --name-only`) \|> read \|> String
	if out == ""
	exit(0)
	else
	@error "Some files have not been formatted !!!"
	write(stdout, out)
	exit(1)
	end'

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