Colon `:` in file names breaks git sync on Windows

[sergey-v9]

Ran into a small issue introduced in #174. A file name now contain a colon :: skills/openhands-automation/commands/automation:create.md, which is an invalid character on Windows. This makes it impossible to sync the repo locally:

sergey@pluto MINGW64 /w/code/OpenHands/extensions (main)
$ gh repo sync
failed to run git: error: invalid path 'skills/openhands-automation/commands/automation:create.md'

Would it be possible to rename those files using a different separator? I get that the tooling itself runs on Unix-like envs, but it'd be nice to be able to clone and browse the sources on Windows without issues.

Thanks!