Update release notes

RELEASE.md

@@ -8,7 +8,7 @@ The latest version of this database is installed when running `padloc --db-updat
 
 ### What's new
 
-This release of PADLOC-DB adds many new systems from [Millman et al., 2022](https://doi.org/10/gsdp9b) (HMMs from [DefenseFinder](https://doi.org/10/kx68)), the systems from [Vassalo et al., 2022](https://doi.org/10/gqwkdp), the Juk system from [Li et al., 2022](https://doi.org/10/kwzv), the Ddm system from [Jaskólska et al., 2022](https://doi.org/10/hrkn), the HNH (PcaRCII) system from [Birkholz et al., 2022](https://doi.org/10/kw2b), the MADS system from [Maestri et al., 2023](https://doi.org/10/ktmx), several new Hma-embedded candidate systems (HECs), based on their presence embedded between the genes of Hma systems (Payne, unpublished), and hundreds of other phage defence candidates (PDCs) based on their presence embedded between the genes of RM, BREX, and DISARM systems (Payne, unpublished).
+This release of PADLOC-DB adds many new systems from [Millman et al., 2022](https://doi.org/10/gsdp9b) (HMMs from [DefenseFinder](https://doi.org/10/kx68)), the systems from [Vassalo et al., 2022](https://doi.org/10/gqwkdp), the Juk system from [Li et al., 2022](https://doi.org/10/kwzv), the Ddm system from [Jaskólska et al., 2022](https://doi.org/10/hrkn), the HNH (PcaRCII) system from [Birkholz et al., 2022](https://doi.org/10/kw2b), the MADS system from [Maestri et al., 2023](https://doi.org/10/ktmx), several new Hma-embedded candidate systems (HECs) (Payne, unpublished), and hundreds of other phage defence candidates (PDCs) (Payne, unpublished).
 
 The covariance models used by the PADLOC web server for retron ncRNA detection have also been included. Instructions for using these CMs with PADLOC can be found in the [PADLOC repo](https://github.com/padlocbio/padloc).