Make property docstrings longer
Make property docstrings longer

sphinx formats properties with short docstrings side by side in a
flowing layout. The layout is difficult to read as it makes an
unevenly spaced grid of blocks. With this change, the `State`
properties all render in a single column format.

joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue