Add a table sticky headings filter

This wraps all tables inside a div with a class of
table-sticky-headings, so that we can style them.

See https://gitlab.com/gitlab-org/gitlab-docs/-/issues/1076

1 files changed, 1 insertions, 0 deletions

diff --git a/Rules b/Rules
index c52823f8..d6818725 100644
--- a/Rules
+++ b/Rules
@@ -95,6 +95,7 @@ compile '/**/*.md' do
     filter :admonition
     filter :icons
     filter :introduced_in
+    filter :table_sticky_headings
 
     if item[:layout].nil?
       layout '/default.*'