minor grammar fix
context: https://github.com/element-hq/synapse/pull/19260#discussion_r2614227743
A
Andrew Morgan committed
048629dd13ffbcbc7603a8c729a4f5a6be20db8a
Parent: 7347cc4
context: https://github.com/element-hq/synapse/pull/19260#discussion_r2614227743