docs: Changes for v2.5.1 release (#228)

* docs: Changes for v2.5.1 release

* Remove path from addresses doc

* Fix www redirect pattern

src/docs/markdown/caddyfile/directives/redir.md

@@ -17,10 +17,11 @@ redir [<matcher>] <to> [<code>]
 
 - **&lt;to&gt;** is the target location. Becomes the response's Location header.
 - **&lt;code&gt;** is the HTTP status code to use for the redirect. Can be:
-	- A positive integer in the 3xx range
+	- A positive integer in the 3xx range, or 401
 	- `temporary` for a temporary redirect (302; default)
 	- `permanent` for a permanent redirect (301)
 	- `html` to use an HTML document to perform the redirect (useful for redirecting browsers but not API clients)
+	- A placeholder with a status code value
 
 
 
@@ -42,4 +43,10 @@ Same, but permanent:
 
 ```caddy-d
 redir https://example.com{uri} permanent
-```
+```
+
+Redirect your old `/about-us` page to your new `/about` page:
+
+```caddy-d
+redir /about-us /about
+```