Fix contributors page and overview image - #978

Fix contributors page and overview image#978

MakisH merged 3 commits into

precice:hugoprecice/precice.github.io:hugofrom

MuhammadAashirAslam:fix/contributors-and-overview-imageMuhammadAashirAslam/precice.github.io:fix/contributors-and-overview-imageCopy head branch name to clipboard