Update example IP address

[dd32]

A WordPress.org IP address (which may change over time) is currently used within a docblock, we should update this to use an IP from a TEST-NET-xx IP range.

Trac ticket: https://core.trac.wordpress.org/ticket/65229

Use of AI Tools

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[dmsnell]

Nice catch, and thanks for looking for a genuinely safe IP to replace it!