update readme to add Zenodo doi

Author: delipouya

README.md

@@ -52,11 +52,13 @@ Follow [tutorial-1](https://github.com/delipouya/sciRED/blob/main/tutorial1_scMi
 
 The input data for Tutorial 1 is provided in the "Data" folder. Instructions for downloading and saving data for Tutorial 2 can be found in the `data_stimPBMC.R` script inside the _data_prep_ folder. The demo for Tutorial 1 took less than a minute to run on a workstation with 24 CPUs and 64 GB RAM.
 
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 ## Citation
 
 If you find sciRED useful for your publication, please cite:
+
 [Pouyabahar et al. Interpretable single-cell factor decomposition using sciRED.](https://www.biorxiv.org/content/10.1101/2024.08.01.605536v2)
+
+For the code and Zenodo archive:  
 [![DOI](https://zenodo.org/badge/791387168.svg)](https://doi.org/10.5281/zenodo.14593137)
 
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