RISC-V: Fix misspelled term args in error_at message

RISC-V: Fix misspelled term args in error_at message

When build with "-Werror=format-diag", there will be one misspelled
term args as below. This patch would like fix it by taking the term
arguments instead.

../../gcc/config/riscv/riscv-vector-builtins.cc: In function 'tree_node*
riscv_vector::resolve_overloaded_builtin(location_t, unsigned int, tree,
vec<tree_node*, va_gc>*)':
../../gcc/config/riscv/riscv-vector-builtins.cc:4633:65: error:
misspelled term 'args' in format; use 'arguments' instead
[-Werror=format-diag]
 4633 |     error_at (loc, "no matching function call to %qE with empty
      args", fndecl);

gcc/ChangeLog:

	* config/riscv/riscv-vector-builtins.cc (resolve_overloaded_builtin):
	Replace args to arguments for misspelled term.

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/base/pr113766-1.c: Adjust the test cases.

Signed-off-by: Pan Li <pan2.li@intel.com>