Update script generating cli-reference doc

[kadel]

script needs to be updated
see #1987 (review)
and #1987 (review)

[girishramnani]

this part of the reference was added manually

[NOTE]
====
By default the path to the global preference file is `~/.odo/preferece.yaml`, it is stored in in the environment variable `GLOBALODOCONFIG`. You can set up a custom path by setting the value of the environment variable to a new preference path, for example `GLOBALODOCONFIG="new_path/preference.yaml"`

Run `echo "$GLOBALODOCONFIG"` to display the current value of the variable. 
====

which means as per the current location of this snippet, it should be part of the long description of the odo preference?
other option is to move it from here and add it to the dev docs as cli reference is auto-generated
@kadel

[kadel]

/unassign @girishramnani
/close
/triage unresolved
the script is no longer used

[openshift-ci-robot]

@kadel: Closing this issue.

In response to this:

/unassign @girishramnani
/close
/triage unresolved
the scripts are is no longer used

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