pcie patch link in the list points to invalid url

list (https://rvspace.org/en/project/JH7110_Upstream_Plan) has this invalid url: `https://patchwork.kernel.org/project/linux-riscv/cover/20230814082016.104181-1-minda.chen@starfivetech.com//`

replacing the trailing // with / fixes it (i don't have access to edit the file)