Revised the filter ID description (#162)

* updated filter id assignment to match HDF5 documentation

Author: brtnfld

docs/RegisteredFilterPlugins.md

@@ -12,13 +12,38 @@ To register a filter please contact The HDF Helpdesk with the following informat
 * Short description of the new filter
 * Links to any relevant information including licensing information
 
-Here is the current policy regarding filter identifier assignment:
-The filter identifier is designed to be a unique identifier for the filter.
-Values from `0` to `255` are reserved for internal use by The HDF Group for filters that are part of the HDF5 library itself.
-Values from `256` to `511` are available for testing new VOL connectors.
-Values from `512` to `32,767` are reserved for filters managed by The HDF Group but are nominally requested, developed, and supported by third parties.
-Values from `32768` to `65535` are reserved for non-distributed uses (e.g., internal company usage) or for application usage when testing a feature. The HDF Group does not track or document the usage of filters with identifiers from this range.
-Please contact the maintainer of a filter for help with the filter/compression support in HDF5.
+The current policy for filter identifier assignment is as follows:
+
+ <table>
+  <tr>
+    <th>Filter Identifier Values</th><th>Description</th>
+  </tr>
+  <tr>
+    <td><code>0-255</code></td>
+    <td>These values are reserved for filters predefined and
+         registered by the HDF5 library and of use to the general public.</td>
+  </tr>
+  <tr>
+    <td><code>256-511</code></td>
+    <td>Filter values in this range are intended for testing only and can be
+        temporarily used by any organization. No attempts are made to resolve
+        numbering conflicts, as all definitions are temporary.</td>
+  </tr>
+  <tr>
+    <td><code>512-32,767</code></td>
+    <td>Filter values within this range are designated for filters managed by
+        The HDF Group, but they are nominally requested, developed, and supported
+        by third parties. Please contact the
+        <a href="mailto:[email protected]">HDF5 development team</a>
+        to reserve a value or range of values for use by your filters.</td>
+  </tr>
+  <tr>
+    <td><code>32,768-65,535</code></td>
+    <td>Filter values in this range are designated for internal company use or
+        application testing when assessing a feature. The HDF Group does not
+        track or document the use of filters within this range.</td>
+  </tr>
+  </table>
 
 List of Filters Registered with The HDF Group
 ---------------------------------------------
@@ -60,6 +85,8 @@ List of Filters Registered with The HDF Group
 |32029   |<a href="#trpx">TERSE/PROLIX</a>    |A lossless and fast compression of the diffraction data|
 |32030   |<a href="#ffmpeg">FFMPEG</a>    |A lossy compression filter based on ffmpeg video library|
 
+> [!NOTE] 
+> Please contact the maintainer of a filter for help with the filter/compression support in HDF5.
 
 ## <center>The Filters</center>