Fix a broken link and fix a typo (#8688)
Fix a broken link and fix a typo (#8688)

* Fix a broken link and fix a typo

* Change Blog posts back to Blogposts

I've noticed that treating Blogposts as one word is the convention

gatsbyjs/gatsby,ChristopherBiscardi/gatsby,ChristopherBiscardi/gatsby,gatsbyjs/gatsby,mingaldrichgan/gatsby,0x80/gatsby,gatsbyjs/gatsby,0x80/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,0x80/gatsby,ChristopherBiscardi/gatsby,mingaldrichgan/gatsby,mingaldrichgan/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby