fix markdown typesetting

INSTALLING.md

@@ -21,44 +21,44 @@ just run the command './macsio', it will do something but probably
 not what you want. Here are some example command-lines. . .
 
   - To run with Multiple Independent File (MIF) mode to 8 HDF5 files. . .
-```shell
-       mpirun -np 93 macsio --interface hdf5 --parallel_file_mode MIF 8
-```
+    ```shell
+    mpirun -np 93 macsio --interface hdf5 --parallel_file_mode MIF 8
+    ```
   - Same thing to but a Single Shared File (SIF) mode to 1 HDF5 file. . .
-```shell
-       mpirun -np 93 macsio --interface hdf5 --parallel_file_mode SIF 1
-```
+    ```shell
+    mpirun -np 93 macsio --interface hdf5 --parallel_file_mode SIF 1
+    ```
   - Default per-proc request size is 80,0000 bytes (10K doubles). To use
     a different request size, use --part_size . . .
-```shell
-       mpirun -np 128 macsio --interface hdf5 --parallel_file_mode MIF 8 --part_size 10M
-```
-   'M' means either decimal Megabytes (Mb) or binary Mibibytes (Mi)
-   depending on setting for --units_prefix_system. Default is binary.
+    ```shell
+    mpirun -np 128 macsio --interface hdf5 --parallel_file_mode MIF 8 --part_size 10M
+    ```
+    'M' means either decimal Megabytes (Mb) or binary Mibibytes (Mi)
+    depending on setting for --units_prefix_system. Default is binary.
   - Default #parts/proc is 2, which is common for applications that support
     'domain overload' workflows. Change with --avg_num_parts <float> arg
-```shell
-       mpirun -np 128 macsio --interface hdf5 --parallel_file_mode MIF 8 --avg_num_parts 2.5
-```
+    ```shell
+    mpirun -np 128 macsio --interface hdf5 --parallel_file_mode MIF 8 --avg_num_parts 2.5
+    ```
     means that 50% of procs have 2 parts and 50 % of procs have 3 parts.
   - Default number of dumps is 10, change with --num_dumps argument. . .
-```shell
-       mpirun -np 128 macsio --interface hdf5 --parallel_file_mode MIF 8 --num_dumps 2
-```
+    ```shell
+    mpirun -np 128 macsio --interface hdf5 --parallel_file_mode MIF 8 --num_dumps 2
+    ```
   - Set various debugging levels (1,2 or 3, more info in logs with higher numbers)
-```shell
-       mpirun -np 128 macsio --interface hdf5 --parallel_file_mode MIF 8 --debug_level 2
-```
+    ```shell
+    mpirun -np 128 macsio --interface hdf5 --parallel_file_mode MIF 8 --debug_level 2
+    ```
     Note: debugging can degrade performance and skew timing results
   - Getting more help. . .
-```shell
-       ./macsio --help
-```
+    ```shell
+    ./macsio --help
+    ```
     Will produce a lot of help output including MACSio's main arguments as well as arguments
     specific to any enabled plugins.
   - To use H5Z-ZFP compression plugin, be sure to have the plugin compiled and available
     with the same compiler and version of HDF5 you are using with MACSIO. Then to run it
-```shell
+    ```shell
     env HDF5_PLUGIN_PATH=<path-to-plugin-dir> mpirun -np 4 ./macsio/macsio --interface hdf5 --parallel_file_mode MIF 2 --avg_num_parts 2.5 --part_size 40000 --part_dim 2 --part_type rectilinear --num_dumps 2 --filebase macsio_mif --fileext h5 --debug_level 1 --plugin_args --compression zfp rate=4
-```
+    ```
     where `path-to-plugin-dir` is the path to the directory containing `libh5zzfp.{a,so,dylib}`