Used correct names even though the names are not correct,

otherwise, links will fail.

Author: bmribler

downloads/hdf4/hdf4_3_1.md

@@ -10,9 +10,9 @@ title: HDF 4.3.1
 
 | Version | HDF 4.3.1 |
 | Release Date | 6/30/2025 |
-| Additional Release Information | [Release Notes](https://github.com/HDFGroup/hdf4/blob/hdf_4_3_1/release_notes/RELEASE.txt) | 
+| Additional Release Information | [Release Notes](https://github.com/HDFGroup/hdf4/blob/hdf4.3.1/release_notes/RELEASE.txt) | 
 || [Newsletter Announcement](https://www.hdfgroup.org/2025/06/release-of-hdf-4-3-1-newsletter-206/) | 
-|| [Compatibility Reports for 4.3.1 vs 4.3.0](https://github.com/HDFGroup/hdf4/releases/download/snapshot/snapshot.html.abi.reports.tar.gz)
+|| [Compatibility Reports for 4.3.1 vs 4.3.0](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/hdf4.3.1.html.abi.reports.tar.gz)
 
 ## Downloads
 
@@ -21,10 +21,10 @@ Applications that were created with earlier HDF4 releases AND employed internal
 
 |  File  |  Type |
 | ----- | ---- | --------------------- |
-| [hdf4.3.1.tar.gz](https://github.com/HDFGroup/hdf4/archive/refs/tags/hdf4.3.1.tar.gz) | Source release   |
-| [hdf4.3.1.zip](https://github.com/HDFGroup/hdf4/archive/refs/tags/hdf4.3.1.zip) | Source release    |
+| [hdf4.3.1.tar.gz](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/hdf.tar.gz) | Source release   |
+| [hdf4.3.1.zip](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/hdf.zip) | Source release    |
 | [Ready to use Binaries](https://github.com/HDFGroup/hdf4/releases/tag/hdf4.3.1)  | Pre-built binary distributions for Unix and Windows |
-| [sha256](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/sha256sums.txt) | Checksum file   |
+| [sha256](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/hdf4.3.1.sha256sums.txt) | Checksum file   |
 
 Please refer to [Build Instructions](https://github.com/HDFGroup/hdf4/blob/hdf4.3.1/release_notes/INSTALL) for building with either CMake or Autotools.