Fix common event fields template to use subtitle char

specification/modules/intro.rst

@@ -1,5 +0,0 @@
-Modules
-=======
-
-Modules blurb goes here.
-

specification/targets.yaml

@@ -14,7 +14,6 @@ targets:
       - 6-appendices.rst
 groups:  # reusable blobs of files when prefixed with 'group:'
   modules:
-    - modules/intro.rst
     - modules/voip_events.rst
     - modules/typing_notifications.rst
     - modules/receipts.rst

templating/matrix_templates/sections.py

@@ -160,7 +160,12 @@ class MatrixSections(Sections):
     def _render_ce_type(self, type):
         template = self.env.get_template("common-event-fields.tmpl")
         ce_types = self.units.get("common_event_fields")
-        return template.render(common_event=ce_types[type])
+        subtitle_title_char = self.units.get("spec_targets")[
+            "relative_title_styles"
+        ]["subtitle"]
+        return template.render(
+            common_event=ce_types[type], title_kind=subtitle_title_char
+        )
 
     def render_common_event_fields(self):
         return self._render_ce_type("event")

templating/matrix_templates/templates/common-event-fields.tmpl

@@ -1,5 +1,5 @@
 {{common_event.title}} Fields
-{{(7 + common_event.title | length) * '-'}}
+{{(7 + common_event.title | length) * title_kind}}
 
 {{common_event.desc | wrap(80)}}