nbdev_new results in creation of template file with incorrect name

[YaegerKnight]

Specs

Laptop - Macbook Pro
OS - MacOS Tahoe 26.2 with M4 Pro
Python version - 3.12
Conda version - 25.11.11

Steps to recreate -

• Create a new folder (nbdev_test here)
• Run nbdev_new
• Answer the questions accordingly
• Error occurs

I was setting up a new nbdev project from scratch in a Conda environment with Python 3.12 and I kept running into this error.

Looking closer, it seems that nbdev_new is creating a folder named nbdev-template-1.1.6 while the command is expecting nbdev-template-v1.1.6

I believe the issue might be related to the way this line handles building the directory name.

[YaegerKnight]

I'd like to raise a PR that fixes that issue if that's ok with the maintainers.