Clarify Insights feature availability in Left-side panel docs

[hamzanasir123]

NOTE

In the Left-side panel documentation, the Insights section currently says:
Insights: Provides analytics and insights about your workflows.
This can be misleading, since the Insights feature is only available on Pro and Enterprise plans.

Suggested update:
Insights: Provides analytics and insights about your workflows. Available only on Pro and Enterprise plans; upgrade required.

Why this change is important:
Helps new users avoid confusion when they can’t find Insights in the Community edition.
Makes the documentation more accurate and transparent about feature availability.

[github-actions]

Hi @hamzanasir123! Thanks for your contribution, but we are no longer updating the course. We expect to fully replace it in the coming months. Please review n8n's contributing guidelines.