Update CONTRIBUTORS.md
Update CONTRIBUTORS.md

Signed-off-by: Marius Hillenbrand <fe1e41a2593d8a0d1128edc53cee7053b8cae934@linux.ibm.com>

xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS