improve docstring

Author: emilykl

src/plots/template_attributes.js

@@ -27,11 +27,12 @@ function shapeTemplateFormatStringDescription() {
     return [
         'Variables are inserted using %{variable},',
         'for example "x0: %{x0}".',
-        'Numbers are formatted using d3-format\'s syntax %{variable:d3-format}, for example "Price: %{x0:$.2f}".',
+        'Numbers are formatted using d3-format\'s syntax %{variable:d3-format}, for example "Price: %{x0:$.2f}". See',
         FORMAT_LINK,
         'for details on the formatting syntax.',
-        'Dates are formatted using d3-time-format\'s syntax %{variable|d3-time-format}, for example "Day: %{2019-01-01|%A}".',
+        'Dates are formatted using d3-time-format\'s syntax %{variable|d3-time-format}, for example "Day: %{x0|%m %b %Y}". See',
         DATE_FORMAT_LINK,
+        'for details on the date formatting syntax.',
         'A single multiplication or division operation may be applied to numeric variables, and combined with',
         'd3 number formatting, for example "Length in cm: %{x0*2.54}", "%{slope*60:.1f} meters per second."',
         'For log axes, variable values are given in log units.',