Merge pull request #11311 from IQSS/11252-ncml

explain how to switch to (working) betatest NcML previewer

Author: ofahimIQSS

doc/release-notes/11252-ncml.md

@@ -0,0 +1,20 @@
+## NcML Previewer Bug Fix
+
+[Dataverse Previewers](https://github.com/gdcc/dataverse-previewers) v1.4 contains a bug in the NcML previewer that prevents it from working with signed URLs. (See #11252 for screenshots.)
+
+This has been [fixed](https://github.com/gdcc/dataverse-previewers/commit/2211989e7b9e12c875e18b4893ba4f1dfb1603a5) in the "betatest" version of the previewer.
+
+Until v1.5 is released, we recommend [deleting](https://guides.dataverse.org/en/6.5/admin/external-tools.html#managing-external-tools) the v1.4 version and switching to the "betatest" version. This can be achieved by editing the [curl command](https://github.com/gdcc/dataverse-previewers/blob/develop/6.1curlcommands.md#ncml-previewer) for the NcML previewer, changing this line...
+
+`"toolUrl":"https://gdcc.github.io/dataverse-previewers/previewers/v1.4/NcmlPreview.html",`
+
+... to...
+
+`"toolUrl":"https://gdcc.github.io/dataverse-previewers/previewers/betatest/NcmlPreview.html",`
+
+Note that there are two curl commands as the NcML tool supports two content types:
+
+- `"contentType":"application/x-hdf5"`
+- `"contentType":"application/netcdf"`
+
+See also #11252 and #11311.