Fixed a grammar error
Fixed a grammar error

Co-Authored-By: J. Alvarez-Jarreta <209e52299550b20e7d87468c394c79315b3e697d@ebi.ac.uk>
Ensembl/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara