Check for .md instead of .html in the redirect_to item

Due to first checking if there wasn't an .html extension in the
redirect_to item, this was not set if the provided URL was a clean URL.

For example:

---
redirect_to: 'https://design.gitlab.com'
---

would never match one of the rules so as to set the redirect_to item.

1 files changed, 1 insertions, 1 deletions

diff --git a/Rules b/Rules
index c59e75ed..42c20996 100644
--- a/Rules
+++ b/Rules
@@ -18,7 +18,7 @@ preprocess do
         end
       else
         # If the provided relative URL is in Markdown, correct it to HTML.
-        unless item[:redirect_to].to_s.match(/.html$/)
+        if item[:redirect_to].to_s.match(/.md$/)
           item[:redirect_to] = item[:redirect_to].gsub!(/\.md/, '.html')
         end
       end