Update README.md

Author: ataha24

README.md

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 # Magnetic resonance imaging datasets with anatomical fiducials for quality control and registration
 <img width="757" alt="image (21)" src="https://user-images.githubusercontent.com/46094728/200840201-90d2e6ef-b066-4de9-8bae-79cb51bd2354.png">
 
-[![DOI](.svg)](link)
+<a href="https://doi.org/10.5281/zenodo.7640692"><img src="https://zenodo.org/badge/DOI/10.5281/zenodo.7640692.svg" alt="DOI"></a>
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 ## In this GitHub repo, you can find: