Use House for MD comments

test/fixtures/action_text/markdowns.yml

@@ -0,0 +1,14 @@
+logo_agreement_jz:
+  record: logo_agreement_jz (Comment)
+  name: body
+  content: I agree.
+
+logo_agreement_kevin:
+  record: logo_agreement_kevin (Comment)
+  name: body
+  content: Same, let’s do it.
+
+layout_overflowing_david:
+  record: layout_overflowing_david (Comment)
+  name: body
+  content: The text is overflowing the container.

test/fixtures/comments.yml

@@ -1,13 +1,10 @@
 logo_agreement_jz:
-  body: I agree.
   creator: jz
   created_at: <%= 2.days.ago %>
 
 logo_agreement_kevin:
-  body: Same, let’s do it.
   creator: kevin
   created_at: <%= 2.hours.ago %>
 
 layout_overflowing_david:
-  body: The text is overflowing the container.
   creator: david