Summary: Mixpanel Growth plan adds free session replays

Why It Matters: This change makes the Growth plan more appealing.

What Changed:

• The "Growth" plan now says "20K monthly session replays free" instead of "20K monthly session replays."
• The "Session replays" row in the table for the "Growth" plan changed from "20K / month" to "Up to 500K / month."
• The heading "Drive meaningful growth today" changed to "Let's get started."