Removed tar from supported special handling of compressed files

Per findings in #2195 removed tar and added a note that it is coming soon.

doc/sphinx-guides/source/user/dataset-management.rst

@@ -55,10 +55,10 @@ Metadata found in the header section of `Flexible Image Transport System (FITS)
 aggregated and displayed in the Astronomy Domain-Specific Metadata of the Dataset that the file belongs to. This FITS file metadata, is therefore searchable
 and browsable (facets) at the Dataset-level.
 
-Compressed Files: tar & zip
+Compressed Files
 ----------------------------------------
 
-Compressed files in tar and zip format are unpacked automatically. If it fails to unpack, for whatever reason, it will upload as 
+Compressed files in zip format (support for tar coming soon) are unpacked automatically. If it fails to unpack, for whatever reason, it will upload as 
 is. If the number of files inside are more than a set limit (1,000), you will get an error message and the file will uploads as is.
 
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