fix issue

templates/explore/datasets.tmpl

@@ -162,7 +162,7 @@
 										{{end}}
 									</div>
 									<div style="font-size: 16px;color:#0366D6;font-family: SourceHanSansSC-medium;height: 27px;font-weight: bold;">{{.Title}}</div>
-									{{if and (.dataset.Category) (.dataset.Task) (.dataset.License)}}
+									{{if and (.Category) (.Task) (.License)}}
 									<div style="font-size: 12px;margin-top: 5px;height: 24px;">
 										{{if .Category}}
 										{{$category := .Category}}