Fix build status images
Fix build status images

The repository was moved, update the links.
ds77/zstd,inikep/zstd,Cyan4973/zstd,Cyan4973/zstd,Majlen/zstd,Majlen/zstd,ds77/zstd,Cyan4973/zstd,inikep/zstd,inikep/zstd,Majlen/zstd,ds77/zstd,inikep/zstd,Cyan4973/zstd,ds77/zstd,Cyan4973/zstd,Majlen/zstd