[FAB-6307] Fix WYFA to reflect new folder

Contents of "fabcar" directory changed.
Requiring doc fix.
[ci-skip]

Change-Id: I8b4fa5b21ac26031285dd8a6d66d75928d9e83ee
Signed-off-by: joe-alewine <Joe.Alewine@ibm.com>

Author: joe-alewine

docs/source/write_first_app.rst

@@ -82,7 +82,7 @@ You should see the following:
 
 .. code:: bash
 
-   chaincode	invoke.js	network		package.json	query.js	startFabric.sh
+   creds invoke.js package.json query.js startFabric.sh
 
 Use the ``startFabric.sh`` script to launch the network. This script downloads
 and extracts the Fabric docker images, so it will take a few minutes to