This patch fixes the typo in the test case `param-autovec-mode.c` in the RISC-V
autovec testsuite.
The option `autovec-mode` is changed to `riscv-autovec-mode` to match the
expected parameter name.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/rvv/autovec/param-autovec-mode.c: Change
`autovec-mode` to `riscv-autovec-mode` in dg-options.
/* { dg-do compile } */
-/* { dg-options "-O3 -march=rv64gcv -mabi=lp64d --param=autovec-mode=V4QI -fdump-tree-vect-details" } */
+/* { dg-options "-O3 -march=rv64gcv -mabi=lp64d --param=riscv-autovec-mode=V4QI -fdump-tree-vect-details" } */
/* By default we will use RVVM1SI mode for vectorization because N is not
known. Check that we use V4QI and create an epilogue when the autovec-mode