Align UGC section copy with high-performing Meta ad hooks

Changes

1. 01CURRENT: Produce scroll-stopping social content without a camera or studio. From product reviews and news updates to story-style videos where your avatar responds to trending clips, HeyGen helps you create and scale "faceless" channels and personal brands on TikTok, Instagram, and YouTube Shorts. PROPOSED: Replace with: 'The chair was empty. The AI clone kept posting. Produce scroll-stopping social content without a camera or studio. Create an AI version of yourself from a single 15-second video to scale "faceless" channels and personal brands on TikTok, Instagram, and YouTube Shorts.'