add placeholders for links instead

src/Examples.jl

@@ -462,10 +462,9 @@ function execute_notebook(nb)
 end
 
 function fixlinks(content; branch = "gh-pages", commit = "master")
-    if get(ENV, "HAS_JOSH_K_SEAL_OF_APPROVAL", "") == "true"
-        travis_repo_slug = get(ENV, "TRAVIS_REPO_SLUG", "")
+    travis_repo_slug = get(ENV, "TRAVIS_REPO_SLUG", "TRAVIS_REPO_SLUG")
     # use same logic as Documenter to figure out the deploy folder
-        travis_tag = get(ENV, "TRAVIS_TAG", "")
+    travis_tag = get(ENV, "TRAVIS_TAG", "TRAVIS_TAG")
     if isempty(travis_tag)
         folder = "latest"
     else
@@ -479,8 +478,9 @@ function fixlinks(content; branch = "gh-pages", commit = "master")
     # replace @__NBVIEWER_ROOT_URL__ to latest or version directory
     nbviewer_root_url = "https://nbviewer.jupyter.org/github/$(travis_repo_slug)/blob/$(branch)/$(folder)/"
     content = replace(content, "@__NBVIEWER_ROOT_URL__" => nbviewer_root_url)
-    else
-        @info "not running on Travis, skipping link-fix."
+
+    if get(ENV, "HAS_JOSH_K_SEAL_OF_APPROVAL", "") != "true"
+        @info "not running on Travis, skipping links will not be correct."
     end
     return content
 end