/usr/share/man/man7/libOpenCL.so.7.gz is in ocl-icd-libopencl1 2.2.3-1+deb8u1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man7/libOpenCL.7.gz
/usr/share/man/man7/libOpenCL.7.gz