[fuchsia] correct path to sftp server

Change-Id: I12cb213cffc41f5e9a32a463643cecf81fafa870
diff --git a/fuchsia/sshd_config b/fuchsia/sshd_config
index 8bff527..793e8b6 100644
--- a/fuchsia/sshd_config
+++ b/fuchsia/sshd_config
@@ -9,4 +9,4 @@
 ClientAliveInterval 1
 ClientAliveCountMax 5
 
-Subsystem	sftp	/system/bin/sftp-server
\ No newline at end of file
+Subsystem	sftp	/pkg/bin/sftp-server
\ No newline at end of file