add some headings

readme.md

@@ -30,24 +30,24 @@ Pull requests against this repo will automatically generate disposable branch pr
 </summary>
 
 These workshops are pulled through to various front ends and displayed using the [CYF Common Theme](https://common.codeyourfuture.io/). Write for GitHub first, but you can secretly jazz up your layouts for those contexts by using [Hugo shortcodes](https://common.codeyourfuture.io/common-theme/shortcodes/) wrapped in HTML comments. You can add any shortcode in comments and it will be parsed and rendered on our curriculum sites, but not here. 
-
+#### Look in the source code
 <!--{{<note>}}-->
 This note will just be a block of text on GitHub, but a styled section on the curriculum
 <!--{{</note>}}-->
 
 We are working on uniting the views as much as we can. These features can be rendered in both places:
-
+#### Notes
 >[!TIP]
 >GitHub style notes will be rendered as notes on Common
-
+#### Objectives
 ```objectives
 - Start with the active verb
 - Make your objectives testable
 ```
 Objectives wrapped in a [codeblock with the string objectives](https://common.codeyourfuture.io/common-theme/render-hooks/objectives/) will be piped into the [curriculum success pages](https://common.codeyourfuture.io/common-theme/pages/success/)
-
+#### Diagrams
 ```mermaid
-LR
+flowchart LR
 A-->B
 ```
 [Mermaid](https://mermaid.live/edit) works on [Common, exactly the same,](https://common.codeyourfuture.io/common-theme/render-hooks/mermaid/) and any diagrams you write in a readme or issue will render there too. There’re flowcharts, sequence diagrams, gantt charts, mindmaps, and more.