Update registered_vol_connectors.md

documentation/hdf5-docs/registered_vol_connectors.md

@@ -13,16 +13,17 @@ Please contact the maintainer of a VOL connector for help implementing the plugi
 ## List of VOL Connectors Registered with The HDF Group
 | Connector	| Connector Identifier	| Search Name*	| Short Description	| URL	| Contacts
 | --- | --- | --- | --- | --- | ---| 
-| Asynchronous I/O	| 512	| async	| Provides support for asynchronous operations to HDF5 | [https://github.com/hpc-io/vol-async](https://github.com/hpc-io/vol-async)	|  Suren Byna (sbyna at lbl dot gov) | 
+| Asynchronous I/O	| 512	| async	| Provides support for asynchronous operations to HDF5 | [https://github.com/hpc-io/vol-async](https://github.com/hpc-io/vol-async)	| Suren Byna (sbyna at lbl dot gov) | 
 | Cache	| 513	| cache	| Provides support for multi-level, multi-location data caching to dataset I/O operations	| [https://github.com/hpc-io/vol-cache](https://github.com/hpc-io/vol-cache)	| Suren Byna (sbyna at lbl dot gov) | 
 | Log-based	| 514 |	LOG	| The log-based VOL plugin stores HDF5 datasets in a log-based storage layout.<br>In this layout, data of multiple write requests made by an MPI process are appended one after another in the file. Such I/O strategy can avoid the expensive inter-process communication and I/O serialization due to file lock contentions when storing data in the canonical order. Through the log-based VOL, existing HDF5 programs can achieve a better parallel write performance with minimal changes to their codes. | [https://github.com/DataLib-ECP/vol-log-based/blob/master/README.md](https://github.com/DataLib-ECP/vol-log-based/blob/master/README.md)	| Kai Yuan Hou <br> (khl7265 at ece dot northwestern dot edu) | 
-| DAOS	| 4004	| daos	| Designed to utilize the DAOS object storage system by use of the DAOS API <br> https://doi.org/10.1109/TPDS.2021.3097884 | https://github.com/HDFGroup/vol-daos <br> [HDF5 DAOS VOL Connector Design](https://github.com/HDFGroup/vol-daos/blob/master/docs/design_doc.pdf) <br> [HDF5 DAOS VOL Connector User's Guide](https://github.com/HDFGroup/vol-daos/blob/master/docs/users_guide.pdf) | help at hdfgroup dot org | 
+| DAOS	| 4004	| daos	| Designed to utilize the DAOS object storage system by use of the DAOS API <br> https://doi.org/10.1109/TPDS.2021.3097884 | [https://github.com/HDFGroup/vol-daos](https://github.com/HDFGroup/vol-daos) <br> [HDF5 DAOS VOL Connector Design](https://github.com/HDFGroup/vol-daos/blob/master/docs/design_doc.pdf) <br> [HDF5 DAOS VOL Connector User's Guide](https://github.com/HDFGroup/vol-daos/blob/master/docs/users_guide.pdf) | help at hdfgroup dot org | 
 | native| 	0	| native	 | | | help at hdfgroup dot org | 
-| pass-through| 	517	| pass_through_ext| 	Provides a simple example of a pass-through VOL connector	| [https://github.com/hpc-io/vol-external-passthrough](https://github.com/hpc-io/vol-external-passthrough)	| Suren Byna (sbyna at lbl dot gov) | 
+
+| pass-through| 	517	| pass_through_ext |	Provides a simple example of a pass-through VOL connector	| [https://github.com/hpc-io/vol-external-passthrough](https://github.com/hpc-io/vol-external-passthrough)	| Suren Byna (sbyna at lbl dot gov) | 
 | dset-split	| 518	| dset-split	| Creates separate sub files for each dataset created and mounts these sub-files as external links in the main file. It enables versioning of HDF5 files at a dataset boundary. | [https://github.com/hpc-io/vol-dset-split](https://github.com/hpc-io/vol-dset-split)	| Annmary Justine (annmary dot roy at hpe dot com) | 
-| PDC-VOL| 	519| 	PDC-VOL	| It is a terminal VOL that reads and writes HDF5 objects to the PDC system | [https://github.com/hpc-io/pdc](https://github.com/hpc-io/pdc) [https://github.com/hpc-io/vol-pdc](https://github.com/hpc-io/vol-pdc) | Houjun Tang (htang4 at lbl dot gov) | 
-| REST	| 520| 	REST| 	Designed to utilize web-based storage systems by use of the HDF5 REST APIs	| [https://github.com/HDFGroup/vol-rest](https://github.com/HDFGroup/vol-rest)	| Matthew Larson (mlarson at hdfgroup dot org) | 
-| LowFive| 	521	| LowFive	| A new data transport layer based on the HDF5 data model, for in situ workflows. Executables using LowFive can communicate in situ (using in-memory data and MPI message passing), reading and writing traditional HDF5 files to physical storage, and combining the two modes. |	[https://github.com/diatomic/LowFive](https://github.com/diatomic/LowFive)	| Tom Peterka (tpeterka at mcs dot anl dot gov) <br> Dmitriy Morozov (dmorozov at lbl dot gov) | 
+| PDC-VOL |	519 | PDC-VOL	| It is a terminal VOL that reads and writes HDF5 objects to the PDC system | [https://github.com/hpc-io/pdc](https://github.com/hpc-io/pdc) [https://github.com/hpc-io/vol-pdc](https://github.com/hpc-io/vol-pdc) | Houjun Tang (htang4 at lbl dot gov) | 
+| REST	| 520 | REST | Designed to utilize web-based storage systems by use of the HDF5 REST APIs	| [https://github.com/HDFGroup/vol-rest](https://github.com/HDFGroup/vol-rest)	| Matthew Larson (mlarson at hdfgroup dot org) | 
+| LowFive |	521	| LowFive	| A new data transport layer based on the HDF5 data model, for in situ workflows. Executables using LowFive can communicate in situ (using in-memory data and MPI message passing), reading and writing traditional HDF5 files to physical storage, and combining the two modes. |	[https://github.com/diatomic/LowFive](https://github.com/diatomic/LowFive)	| Tom Peterka (tpeterka at mcs dot anl dot gov) <br> Dmitriy Morozov (dmorozov at lbl dot gov) | 
 
 *The Search Name provides a mechanism for searching for a VOL.