wiki:Introduce-dreyfus-into-couchdb, clarify position of section dreyfus in local.ini

[grueni]

In
https://github.com/cloudant-labs/dreyfus/wiki/Introduce-dreyfus-into-couchdb
in step f rel/overlay/etc/local.ini is edited.

The section should not be added to the end but before the section "admins".
...
[dreyfus]
name = {{clouseau_name}}
...
[admins]

The script dev/run adds a line to this file when used with option --admin.
Starting the cluster will fail with an if section "admins" is not the last section.
Error message is:
[ * ] Running cluster setup ... failed: {"error":"unauthorized","reason":"Name or password is incorrect."}