Comparison page improvement for seo

[Brenosalv]

#600

Changes

• Add the name of the two or three vendors in the "Comparison matrix" heading;
• Add list of related comparison links for each vendor on the end of the article.

Tests / Screenshots

• 2 vendors:

• 2 vendors vs Estuary:

• Related comparison links for each vendor in the end of the article:

[github-actions]

Visit the preview URL for this PR (updated for commit ecc531a):

https://estuary-marketing--pr609-brenosalv-seo-600-co-c4ocjgtn.web.app

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[travjenkins]

lgtm

[travjenkins]

@Brenosalv / @SourabhEstuary Coding look okay but I see in the issue How to choose the best option being called out as a possible header and not sure where that is or when we decided to not use that?

[Brenosalv]

@Brenosalv / @SourabhEstuary Coding look okay but I see in the issue How to choose the best option being called out as a possible header and not sure where that is or when we decided to not use that?

@travjenkins I just talked to Sourabh and he said it's good to go.