docs: fix DOI in README

Refer to all versions

Author: djmaxus

README.md

@@ -6,7 +6,7 @@ Repository: [github.com/ImperialCollegeLondon/StrataTrapper](https://github.com/
 ![GitHub Tag](https://img.shields.io/github/v/tag/ImperialCollegeLondon/StrataTrapper?sort=semver&style=flat&label=version)
 ![GitHub Release Date](https://img.shields.io/github/release-date/ImperialCollegeLondon/StrataTrapper?display_date=published_at&style=flat&label=dated)
 [![License](https://img.shields.io/badge/License-BSD_3--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause)
-[![DOI](https://zenodo.org/badge/741567808.svg)](https://doi.org/10.5281/zenodo.15438165)
+[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.15438164.svg)](https://doi.org/10.5281/zenodo.15438164)
 
 * [The StrataTrapper codes](#the-stratatrapper-codes)
 * [Structure](#structure)