feat: added change directory so it runs in the same folder as the README.md file

[sombriks]

on some monorepo/multiproject setups the script in markdown might fail because it's meant to run in a distinct folder.
this small change add a change directory command so it runs in the same place as the markdown file dwells.

[persiliao]

Very nice. Just what I was looking for.

[persiliao]

@sombriks However, I would suggest adding a configuration item for enabling this feature, otherwise it could easily affect users who previously used the plugin

[sombriks]

@sombriks However, I would suggest adding a configuration item for enabling this feature, otherwise it could easily affect users who previously used the plugin

makes total sense, i'll increment the PR later today