O4-Review.md

@@ -5,9 +5,14 @@
 - The comparison LVK results are the XPHM-no-cosmo posteriors. 
 
 <details><summary>Summary of pBilby changes since O3</summary>
+
 - Team of software engineers from ADACS refactored pbilby (to make it modular rather than a script) and added unit-tests
+
 - Updated pbilby to use dynesty > 2.0 (has a bug-fix relating to passing random-seeds to MPI processes) 
 
+- Update pbilby to use bilby > 2
+
+
 [Link to changelog](https://git.ligo.org/lscsoft/parallel_bilby/-/blob/master/CHANGELOG.md#v200-2023-03-17)
 
 </details>