adjust readme badge formatting

Author: CosmoMatt

README.md

@@ -3,8 +3,7 @@
 [![image](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![image](https://badge.fury.io/py/s2fft.svg)](https://badge.fury.io/py/s2fft)
 [![image](http://img.shields.io/badge/arXiv-2311.14670-orange.svg?style=flat)](https://arxiv.org/abs/2311.14670)<!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-10-orange.svg?style=flat-square)](#contributors-)
-<!-- ALL-CONTRIBUTORS-BADGE:END --> 
+[![All Contributors](https://img.shields.io/badge/all_contributors-10-orange.svg?style=flat-square)](#contributors-)<!-- ALL-CONTRIBUTORS-BADGE:END --> 
 [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/astro-informatics/s2fft/blob/main/notebooks/spherical_harmonic_transform.ipynb)
 <!-- [![image](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black) -->