fix inputs for plot solids in specific regions

docs/source/inputs/InputsPlotFiles.rst

@@ -161,3 +161,14 @@ The following inputs must be preceded by "amr.solids" and allow to write additio
 +---------------------------+-----------------------------------------------------------------+-------------+-----------+
 
 For each region with name [region] specified in the inputs, it will be saved a plotfile with name "partsXXXXX_[region]", where XXXXX stands for the timestep number.
+
+
+Below is an example for specifying the inputs to plot solids data in  a given
+region.
+
+.. code-block:: none
+
+   amr.solids.regions = my_region
+
+   amr.solids.my_region.plot_int = 10
+   amr.solids.my_region.plt_vel_p = 1

docs/source/inputs/InputsProblemDefinition.rst

@@ -349,10 +349,6 @@ models. The following inputs must be preceded by the "solids." root
 +------------------------------------------+-------------------------------------------------------------+----------+----------+
 | newton_solver.max_iterations             | Define max number of iterations for Damped-Newton solver    |  int     |  100     |
 +------------------------------------------+-------------------------------------------------------------+----------+----------+
-| plot_regions                             | This input helps setting which regions to use for filtering | String   |  None    |
-|                                          | solids data by plotting only those particles that reside    |          |          |
-|                                          | in the specified regions                                    |          |          |
-+------------------------------------------+-------------------------------------------------------------+----------+----------+
 
 Below is an example for specifying the solids solver model options.