Update "command block" example

[apinnick]

Single command in code block

A writer used this example to justify documenting 5 commands in a single step. I don't think that was how this example was intended.

For example, the following must be split up into three separate code blocks:

To create templates you can modify, run the following commands:

[source,terminal]
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$ oc adm create-login-template > login.html
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[source,terminal]
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$ oc adm create-provider-selection-template > providers.html
----

[source,terminal]
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$ oc adm create-error-template > errors.html
----

Resources:

• RHSSG: "Use a single command per code block for each procedure step."
• Modular docs reference guide: "The procedure consists of one or more steps required to complete the procedure. Each step describes one action written in the imperative form, for example, 'Do this action'. "
• ISG: "Write one step for each significant user action, but avoid being too granular. "