No need to say "Example" in the example headline

altair/examples/comet_chart.py

@@ -1,6 +1,6 @@
 """
-Comet Chart Example
-----------------------------
+Comet Chart
+-----------
 Inspired by `Zan Armstrong's comet chart <https://www.zanarmstrong.com/infovisresearch>`_
 this plot uses ``mark_trail`` to visualize change of grouped data over time.
 A more elaborate example and explanation of creating comet charts in Altair

altair/examples/interval_selection.py

@@ -1,6 +1,6 @@
 """
-Interval Selection Example
-==========================
+Interval Selection
+==================
 
 This is an example of creating a stacked chart for which the domain of the
 top chart can be selected by interacting with the bottom chart.

altair/examples/normed_parallel_coordinates.py

@@ -1,6 +1,6 @@
 """
-Normalized Parallel Coordinates Example
----------------------------------------
+Normalized Parallel Coordinates
+-------------------------------
 A `Parallel Coordinates <https://en.wikipedia.org/wiki/Parallel_coordinates>`_
 chart is a chart that lets you visualize the individual data points by drawing
 a single line for each of them.

altair/examples/parallel_coordinates.py

@@ -1,6 +1,6 @@
 """
-Parallel Coordinates Example
-----------------------------
+Parallel Coordinates
+--------------------
 A `Parallel Coordinates <https://en.wikipedia.org/wiki/Parallel_coordinates>`_
 chart is a chart that lets you visualize the individual data points by drawing
 a single line for each of them.

altair/examples/ridgeline_plot.py

@@ -1,6 +1,6 @@
 """
-Ridgeline plot Example
-----------------------
+Ridgeline plot
+--------------
 A `Ridgeline plot <https://serialmentor.com/blog/2017/9/15/goodbye-joyplots>`_
 chart is a chart that lets you visualize distribution of a numeric value for 
 several groups.

altair/examples/select_detail.py

@@ -1,6 +1,6 @@
 """
-Selection Detail Example
-========================
+Selection Detail
+================
 This example shows a selection that links two views of data: the left panel
 contains one point per object, and the right panel contains one line per
 object. Clicking on either the points or lines will select the corresponding