COMMIT_EDITMSG is not updated

[egeshi]

Hello guys and thank you for a wonderful package!

I am experiencing some issues though if running commit from within a submodule directory.

(node:16959) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): Error: ENOTDIR: not a directory, open '/home/ubuntu/path/to/repository/submodule/.git/COMMIT_EDITMSG' [edited for bug report]
(node:16959) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Nonetheless I believe that script is right because hooks for submodules are located under ../.git/modules/submodule/hooks and therefore COMMIT_EDITMSG file would never appear under submodule/.git/COMMIT_EDITMSG and submodule/.git is file, that's true as well ;)

I cannot give a time to resolve it by myself at the moment but will hopefully provide a solution somehow later as a contributor.

Forgot to add. I am using generate-changelog together with commitizen so it may not be a bug in generate-changelog at all.