simplify default template comment

[stirby]

The comment there is really big, my fault. What do we think about something smaller like this?

Old

# This example shows new form types and conditionality using dynamic parameters. 
# When starting from scratch, retain the providers block above.
# 
# In the playground, you can get started with: 
# - snippets for parameter types
# - example forms for advanced use
# - documentation for how and when to enable Dynamic Parameters.
# 
# You can edit user data in the "users" tab, and share your form via URL.
# Enjoy Dynamic Parameters!

New

# Welcome to the Parameters Playground. You can...
# - edit user data in the "users" tab
# - share your form via URL
# - delete the Terraform below to start from scratch
# 
# Enjoy Dynamic Parameters!