Update UI template link and standardize table formatting in IdentityServer upgrade guide

Author: khalidabuhakmeh

src/content/docs/identityserver/upgrades/identityserver4-to-duende-identityserver-v7.mdx

@@ -48,7 +48,7 @@ Depending on the package version shown, your next steps will be different:
 ## IdentityServer4 UI Templates
 
 :::note
-Check your current host project's UI elements against the latest templates in **`Duende.Templates`** to ensure
+Check your current host project's UI elements against the latest templates in **[`Duende.Templates`](/identityserver/overview/packaging.mdx)** to ensure
 you’re using the latest recommendations and best practices.
 :::
 
@@ -509,7 +509,7 @@ As a consequence, if your content root path changes, the default settings for da
 Between different .NET versions, this default setting has changed:
 
 | Version  | Default                                                        |
-| -------- | -------------------------------------------------------------- |
+|----------|----------------------------------------------------------------|
 | .NET 3.1 | Content root path without directory separator suffix           |
 | .NET 5   | Content root path without directory separator suffix           |
 | .NET 6   | Content root path (normalized with directory separator suffix) |