add: article about Setting Up SSH Authentication for GitHub

Author: szuryuu

content/authentication/connecting-to-github-with-ssh/index.md

@@ -1,6 +1,6 @@
 ---
 title: Connecting to GitHub with SSH
-intro: 'You can connect to {% data variables.product.github %} using the Secure Shell Protocol (SSH), which provides a secure channel over an unsecured network.'
+intro: "You can connect to GitHub using the Secure Shell Protocol (SSH), which provides a secure channel over an unsecured network."
 redirect_from:
   - /key-setup-redirect
   - /linux-key-setup
@@ -11,11 +11,11 @@ redirect_from:
   - /articles/generating-an-ssh-key
   - /articles/connecting-to-github-with-ssh
   - /github/authenticating-to-github/connecting-to-github-with-ssh
-  - /setting-up-ssh-authentication-for-github 
+  - /setting-up-ssh-authentication-for-github
 versions:
-  fpt: '*'
-  ghes: '*'
-  ghec: '*'
+  fpt: "*"
+  ghes: "*"
+  ghec: "*"
 topics:
   - SSH
 children:

src/fixtures/fixtures/page-with-frontmatter-error.md

@@ -1,6 +1,7 @@
 ---
-title: This is an article
-intro: 'I've got broken frontmatter'
+title: "This is an article"
+intro: "I've got broken frontmatter"
 versions:
-  free-pro-team: '*'
+  free-pro-team: "*"
+type: "article"
 ---

src/frame/tests/site-tree.js

@@ -69,7 +69,7 @@ function validate(currentPage) {
 
     expect(isValid, errors).toBe(true)
 
-    // Run recursively until we run out of child pages
+    // Run recursively until we run out of child pages to validate
     validate(childPage)
   })
 }