message: changing embree version in doc
diff: @@ -40,13 +40,10 @@ before you can build OSPRay you need the following prerequisites:
  Blocks](https://www.threadingbuildingblocks.org/) (TBB) as tasking
  system for performance and flexibility reasons. Alternatively you can set
  CMake variable `OSPCOMMON_TASKING_SYSTEM` to `OpenMP` or `Internal`.
  -- OSPRay also heavily uses Intel [Embree], installing version 3.2 or
  +- OSPRay also heavily uses Intel [Embree], installing version 3.6.1 or
  newer is required. If Embree is not found by CMake its location can
  be hinted with the variable `embree_DIR`.
  - NOTE: Windows users should use Embree v3.2.2 or later.
  -
  - NOTE: OSPRay is incompatible with Embree v3.6.0.
  - OSPRay also heavily uses Intel [Open VKL](https://www.openvkl.org/), installing version 0.7.0 or
  newer is required. If Open VKL is not found by CMake its location can
  be hinted with the variable `openvkl_DIR`.
  