kselftest: arm64: fix spelling mistake "contiguos" -> "contiguous"

There is a spelling mistake in an error message literal string. Fix it.

Fixes: f96bf434 ("kselftest: arm64: mangle_pstate_invalid_compat_toggle and common utils")
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>

tools/testing/selftests/arm64/signal/testcases/testcases.c

@@ -43,7 +43,7 @@ bool validate_extra_context(struct extra_context *extra, char **err)
 	else if (extra->size & 0x0fUL)
 		*err = "Extra SIZE misaligned";
 	else if (extra->datap != (uint64_t)term + sizeof(*term))
-		*err = "Extra DATAP misplaced (not contiguos)";
+		*err = "Extra DATAP misplaced (not contiguous)";
 	if (*err)
 		return false;