Update README.md

README.md

@@ -3,16 +3,14 @@
 [ ![Docker Build Status](https://img.shields.io/docker/cloud/build/osirrc2019/birch.svg)](https://hub.docker.com/r/osirrc2019/birch)
 [ ![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.3241945.svg)](https://doi.org/10.5281/zenodo.3241945)
 
-[**Zeynep Akkalyoncu Yilmaz**](https://github.com/zeynepakkalyoncu), [**Wei Yang**](https://github.com/Victor0118), [**Haotian Zhang**](https://github.com/HTAustin) and [**Jimmy Lin**](https://github.com/lintool)
+[**Zeynep Akkalyoncu Yilmaz**](https://github.com/zeynepakkalyoncu), [**Wei Yang**](https://github.com/Victor0118), [**Haotian Zhang**](https://github.com/HTAustin), and [**Jimmy Lin**](https://github.com/lintool)
 
 This is the docker image of our implementation of [Birch](https://github.com/castorini/birch) conforming to the [OSIRRC jig](https://github.com/osirrc/jig/) for the [Open-Source IR Replicability Challenge (OSIRRC) at SIGIR 2019](https://osirrc.github.io/osirrc2019/).
 The image is available on [Docker Hub](https://hub.docker.com/r/osirrc2019/birch).
 
 + Supported test collections: `robust04`
 + Supported hooks: `init`, `index`, `search`
 
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 ## Quick Start
 
 The following `jig` command can be used to index TREC disks 4/5 for `robust04`: