Overview Page - change Operations name to "Enterprise"

[jivepig]

With rename of Operations to Enterprise there is a reference to Operations in the Overview page when no license is installed. This would need to be changed to Enterprise wording.

Expected Behavior

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Current Behavior

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Possible Solution

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Steps to Reproduce (for bugs)

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Context

Rebrand

Your Environment

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• Graylog Version:V6.0 RC*
• Java Version:n/a
• OpenSearch Version: n/a
• MongoDB Version: n/a
• Operating System: n/a
• Browser version: n/a