Htmlproofer3044

[Krithisree]

This PR implements the following changes:
Fix content errors to pass HTMLproofer #3044
./public/2016/10/11/transforming-the-federal-marketplace-two-years-in/index.html

• https:/www.whitehouse.gov/blog/2015/01/07/taking-category-management-government-wide-0 is an invalid URL (line 316)
  category management government-wide
• https:/www.whitehouse.gov/blog/2016/02/24/major-step-forward-category-management-announcing-new-government-wide-category is an invalid URL (line 299)
  category leaders

• ./public/authors/index.html
  • internally linking to /authors/shonna-evans-thompson/, which does not exist (line 11089)
    Shonna Evans-Thompson
• ./public/guides/site-scanning/learn-more-about-the-program/index.html
  • internally linking to /data/, which does not exist (line 307)
    available as open data

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