fix headers in ppc

external/ppc/add-gitignore/add-gitignore.md

 ---
 layout: page
-permalink: /internal/ppc/add-gitignore/
+permalink: /external/ppc/add-gitignore/
 shortcut: ppc:add-gitignore
 redirect_from:
   - /cards/ppc:add-gitignore
-  - /internal/cards/ppc:add-gitignore
+  - /external/cards/ppc:add-gitignore
 ---
 
 # Add a .gitignore to your repository

external/ppc/publish-repo/publish-repo.md

 ---
 layout: page
-permalink: /internal/ppc/publish-repo/
+permalink: /external/ppc/publish-repo/
 shortcut: ppc:publish-repo
 redirect_from:
   - /cards/ppc:publish-repo
-  - /internal/cards/ppc:publish-repo
+  - /external/cards/ppc:publish-repo
 ---
 
 # Publish a repository