1 duplicate and 2 formatting issues

1. https://github.com/viatsko/awesome-vscode#debugger-for-chrome-1 is a duplicate of https://github.com/viatsko/awesome-vscode#debugger-for-chrome

2. https://github.com/viatsko/awesome-vscode#facebook-flow isn't in the index and it should be formatted like title like Javascript or other chapters

3. https://github.com/viatsko/awesome-vscode#typescript should be formatted as title like others