Add summary line info to accordion macros

src/govuk/components/accordion/accordion.yaml

@@ -35,7 +35,7 @@ params:
     - name: summary.html
       type: string
       required: false
-      description: HTML content for summary line. You can only include [phrasing content](https://html.spec.whatwg.org/#phrasing-content) inside the summary line. This content should be simple. Do not use other elements besides phrasing content, as they will not be valid HTML. Also, any other elements are not likely to be an appropriate use of the accordion component.
+      description: HTML content for summary line. You can only include [phrasing content](https://html.spec.whatwg.org/#phrasing-content) inside the summary line. This content should be simple. Do not use other elements besides phrasing content, as they will not be valid HTML. Any other elements are not likely to be an appropriate use of the accordion component.
     - name: content.text
       type: string
       required: true