Fix type, use auspice.json extension

Author: mvdbeek

lib/galaxy/config/sample/datatypes_conf.xml.sample

@@ -148,7 +148,7 @@
     <datatype extension="vitesscejson" type="galaxy.datatypes.text:VitessceJson" mimetype="application/json" display_in_upload="True">
       <visualization plugin="vitessce" />
     </datatype>
-    <dataatype extension="auspicejson" type="galaxy.datatypes.text:AuspiceJson" mimetype="application/json" display_in_upload="True" />
+    <datatype extension="auspice.json" type="galaxy.datatypes.text:AuspiceJson" mimetype="application/json" display_in_upload="True" />
     <datatype extension="data_manager_json" type="galaxy.datatypes.text:DataManagerJson" mimetype="application/json" subclass="true" display_in_upload="false"/>
     <datatype extension="dbn" type="galaxy.datatypes.sequence:DotBracket" display_in_upload="true" description="Dot-Bracket format is a text-based format for storing both an RNA sequence and its corresponding 2D structure." description_url="https://wiki.galaxyproject.org/Learn/Datatypes#Dbn"/>
     <datatype extension="fai" type="galaxy.datatypes.tabular:Tabular" display_in_upload="true" subclass="true" description="A Fasta Index File is a text file consisting of lines each with five TAB-delimited columns : Name, Length, offset, linebases, Linewidth" description_url="http://www.htslib.org/doc/faidx.html"/>

lib/galaxy/datatypes/text.py

@@ -707,7 +707,7 @@ class AuspiceJson(Json):
     It uses JSON format to represent the tree structure and metadata.
     """
 
-    file_ext = "auspicejson"
+    file_ext = "auspice.json"
 
     def set_peek(self, dataset: DatasetProtocol, **kwd) -> None:
         super().set_peek(dataset)