target/riscv: rvv: fix typo in vext continuous ldst function names

target/riscv: rvv: fix typo in vext continuous ldst function names

Replace `continus` with `continuous`.

Signed-off-by: Craig Blackmore <craig.blackmore@embecosm.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Max Chou <max.chou@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20241218142353.1027938-2-craig.blackmore@embecosm.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>