Documents the naming conventions documented in precice/tutorials#303, adding:

• Mesh names of participants with multiple interfaces contain the interface in the mesh name, e.g. Fluid-Upstream-Mesh. For meshes on which it is important to distinguish between face centers and face nodes, the modifier comes at the end, e.g. Fluid-Upstream-Mesh-Centers.

I believe that Fluid-Upstream-Centers-Mesh would make more sense, but this is closer to our current practice.