diff --git a/ruby/files_and_serialization/project_event_manager.md b/ruby/files_and_serialization/project_event_manager.md
index 7f49382da2..a5fd116b08 100644
--- a/ruby/files_and_serialization/project_event_manager.md
+++ b/ruby/files_and_serialization/project_event_manager.md
@@ -899,7 +899,8 @@ We have our attendees and their respective representatives. We can now generate
For each attendee we want to include a customized letter that thanks them for attending the conference and provides a list of their representatives. Something that looks like:
```html
-
+
+
Thank You!
@@ -927,7 +928,8 @@ We could define this template as a large string within our current application.
```ruby
form_letter = %{
-
+
+
Thank You!
@@ -1066,7 +1068,8 @@ The convention is to save ERB template files with the extension **erb**. This is
- Update our existing keywords with the ERB escape sequences
```erb
-
+
+
Thank You!
@@ -1082,7 +1085,7 @@ The convention is to save ERB template files with the extension **erb**. This is