selftests/bpf: Fix spelling mistake "scoket" -> "socket"

There is a spelling mistake in a check error message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200826085907.43095-1-colin.king@canonical.com

tools/testing/selftests/bpf/prog_tests/d_path.c

@@ -38,7 +38,7 @@ static int trigger_fstat_events(pid_t pid)
 		return ret;
 	/* unmountable pseudo-filesystems */
 	sockfd = socket(AF_INET, SOCK_STREAM, 0);
-	if (CHECK(sockfd < 0, "trigger", "scoket failed\n"))
+	if (CHECK(sockfd < 0, "trigger", "socket failed\n"))
 		goto out_close;
 	/* mountable pseudo-filesystems */
 	procfd = open("/proc/self/comm", O_RDONLY);