`OTC CatchUp ## Summary` is not needed twice

[KartikSoneji]

Each individual summary page includes the heading twice.

Summary of CatchUp #90

[sreekaransrinath]

That's probably not where the About section belongs as well.

I suggest condensing it into one information dialog

[KartikSoneji]

Since the combined summary template is used to build both the combined and individual summaries, there are a few ways of fixing this:

1. Use the ifdef::[] macro to only show the title while building the combined summary. combined-summary-template.adoc

   ifdef::building-combined-summary[]
   [#{catchup_display_number}]
   === link:/summary/{catchup_display_number}[OTC CatchUp #{catchup_display_number}]
   endif::[]

2. Use tagged regions to tag the content and only include the tagged region while building the individual summaries. combined-summary-template.adoc

   # tag::title[]
   [#{catchup_display_number}]
   === link:/summary/{catchup_display_number}[OTC CatchUp #{catchup_display_number}]
   # end::title[]

3. Remove the header from the combined summary template and add the header while generating the combined summary in the build process. (maybe also rename combined-summary-template.adoc to content.adoc since it's not just used to build the combined summary)

[KartikSoneji]

cc: @OurTechCommunity/core @sreekaransrinath