Several copy updates that will be completed by Coqui Team

[TheRedDawnAct]

• [ ] Advanced Editor description update on Resources
• [x] Advanced Editor description update on Solve voice casting problems
• [x] Advanced Editor description update on Turn a bad recording into the perfect finished product

Linked to this comment from @kdavis-coqui

[TheRedDawnAct]

• [ ] Audio manager description on Resources

Linked to this comment from @kdavis-coqui

[TheRedDawnAct]

• [ ] Phoneme Editor description on Resources

Linked to this comment from @kdavis-coqui

[TheRedDawnAct]

• [ ] https://github.com/coqui-ai/coqui-ai.github.io/issues/475