Link to default colors in readme is taking to wrong page

Hello,
The link in the readme for [default colors](https://github.com/githubocto/repo-visualizer#file_colors) takes to [this link](https://github.com/githubocto/repo-visualizer/pull/src/language-colors.json) instead of taking to the actual file of colors, which I suppose should be [this one](https://github.com/githubocto/repo-visualizer/blob/main/src/language-colors.json).