Fix unsupported distribution link on 404 page

Signed-off-by: Evan Lezar <[email protected]>

404.md

@@ -3,7 +3,7 @@ permalink: /404.html
 ---
 # Unsupported distribution or misconfigured repository settings
 
-If you are seeing this message, it may mean that your are using an [unsupported distribution]("https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/latest/install-guide.html#linux-distributions").
+If you are seeing this message, it may mean that your are using an [unsupported distribution](https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/latest/install-guide.html#linux-distributions).
 
 It may also mean that your repositories are incorrectly configured.