add chart_events and fix streaming in _data/display_as.yaml

Author: michaelbabyn

_data/display_as.yml

@@ -34,7 +34,7 @@ language:
 animations:
     reference: '#animations'
     text: Animations
-language:
+streaming:
     reference: '#streaming'
     text: Streaming
 databases:
@@ -151,6 +151,9 @@ text_documents:
 dashboards:
     reference: '#industry'
     text: By Industry
+chart_events:
+    reference: '#chart-events'
+    text: Chart Events
 ipython_notebooks_gallery:
     reference: '#language'
     text: By Data Science Language