fixes cspell typo

Author: ZPain8464

content/docs/reference/routes/public-access.mdx

@@ -22,7 +22,7 @@ Because the **Public Access** setting bypasses authentication and authorization
 
 :::
 
-The **Public Access** setting instructs Pomerium to grant unautherized and unauthenticated access to all requests to the upstream service. If you enable this setting, no other policy should be provided for the route.
+The **Public Access** setting instructs Pomerium to grant unauthorized and unauthenticated access to all requests to the upstream service. If you enable this setting, no other policy should be provided for the route.
 
 ### Robots.txt behavior