urls: Move /security files to the corporate folder.

corporate/urls.py

@@ -70,7 +70,7 @@ landing_page_urls = [
     path("history/", landing_view, {"template_name": "corporate/history.html"}),
     path("why-zulip/", landing_view, {"template_name": "corporate/why-zulip.html"}),
     path("self-hosting/", landing_view, {"template_name": "corporate/self-hosting.html"}),
-    path("security/", landing_view, {"template_name": "zerver/security.html"}),
+    path("security/", landing_view, {"template_name": "corporate/security.html"}),
     # /for pages
     path("use-cases/", landing_view, {"template_name": "corporate/for/use-cases.html"}),
     path(

templates/corporate/security.html

@@ -25,7 +25,7 @@
     <div class="main">
         <div class="padded-content">
             <div class="inner-content markdown">
-                {{ render_markdown_path('zerver/security.md') }}
+                {{ render_markdown_path('corporate/security.md') }}
             </div>
         </div>
     </div>