fix enable DAOS link in DAOS-Support README
[DAOS](https://github.com/daos-stack/daos) is supported as a backend storage system in dcp. The build instructions for
enabling DAOS support can be found here:
-[Enable DAOS](https://github.com/hpc/mpifileutils/doc/rst/build.rst).
-
+[Enable DAOS](https://mpifileutils.readthedocs.io/en/latest/build.html).
The following are ways that DAOS can be used to move data both across DAOS as well as POSIX
filesystems:
