Adds a reference to the middleware overview.

docs/content/middlewares/overview.md

@@ -142,7 +142,7 @@ If you use multiple `providers` and wish to reference a middleware declared in a
 | [Headers](headers.md)                     | Add / Update headers                              | Security                    |
 | [IPWhiteList](ipwhitelist.md)             | Limit the allowed client IPs                      | Security, Request lifecycle |
 | [MaxConnection](maxconnection.md)         | Limit the number of simultaneous connections      | Security, Request lifecycle |
-| [PassTLSClientCert](passtlsclientcert.md) | TODO                                              | Security                    |
+| [PassTLSClientCert](passtlsclientcert.md) | Adding Client Certificates in a Header            | Security                    |
 | [RateLimit](ratelimit.md)                 | Limit the call frequency                          | Security, Request lifecycle |
 | [RedirectScheme](redirectscheme.md)       | Redirect easily the client elsewhere              | Request lifecycle           |
 | [RedirectRegex](redirectregex.md)         | Redirect the client elsewhere                     | Request lifecycle           |

docs/content/providers/docker.md

@@ -182,7 +182,7 @@ This option can be overridden on a container basis with the `traefik.docker.netw
 
 ### `defaultRule`
 
-_Optional, Default=Host(`{{ normalize .Name }}`)_
+_Optional, Default=```Host(`{{ normalize .Name }}`)```_
 
 For a given container if no routing rule was defined by a label, it is defined by this defaultRule instead.
 It must be a valid [Go template](https://golang.org/pkg/text/template/),
@@ -190,8 +190,15 @@ augmented with the [sprig template functions](http://masterminds.github.io/sprig
 The container service name can be accessed as the `Name` identifier,
 and the template has access to all the labels defined on this container.
 
-```toml
-defaultRule = "Host(`{{ .Name }}.{{ index .Labels \"customLabel\"}}`)"
+```toml tab="File"
+[docker]
+defaultRule = ""
+# ...
+```
+
+```txt tab="CLI"
+--providers.docker
+--providers.docker.defaultRule="Host(`{{ .Name }}.{{ index .Labels \"customLabel\"}}`)"
 ```
 
 ### `swarmMode`
@@ -246,6 +253,8 @@ You can declare pieces of middleware using labels starting with `traefik.http.mi
 
     If you declare multiple middleware with the same name but with different parameters, the middleware fails to be declared.
 
+More information about available middlewares in the dedicated [middlewares section](../middlewares/overview.md).
+
 ### TCP
 
 You can declare TCP Routers and/or Services using labels.

docs/content/providers/kubernetes-crd.md

@@ -212,6 +212,8 @@ spec:
     - name: stripprefix
 ```
 
+More information about available middlewares in the dedicated [middlewares section](../middlewares/overview.md).
+
 ### TLS
 
 To allow for TLS, we made use of the `Secret` kind, as it was already defined, and it can be directly used in an `IngressRoute`:

docs/content/providers/marathon.md

@@ -287,6 +287,8 @@ For example, to declare a middleware [`schemeredirect`](../middlewares/redirects
 
     If you declare multiple middleware with the same name but with different parameters, the middleware fails to be declared.
 
+More information about available middlewares in the dedicated [middlewares section](../middlewares/overview.md).
+
 ### TCP
 
 You can declare TCP Routers and/or Services using labels.

docs/content/providers/rancher.md

@@ -83,7 +83,7 @@ If set to false, services that don't have a `traefik.enable=true` label will be
 
 ### `DefaultRule`
 
-_Optional, Default=Host(`{{ normalize .Name }}`)_
+_Optional, Default=```Host(`{{ normalize .Name }}`)```_
 
 The default host rule for all services.
 
@@ -93,8 +93,15 @@ augmented with the [sprig template functions](http://masterminds.github.io/sprig
 The service name can be accessed as the `Name` identifier,
 and the template has access to all the labels defined on this container.
 
-```toml
-defaultRule = "Host(`{{ .Name }}.{{ index .Labels \"customLabel\"}}`)"
+```toml tab="File"
+[rancher]
+defaultRule = ""
+# ...
+```
+
+```txt tab="CLI"
+--providers.rancher
+--providers.rancher.defaultRule="Host(`{{ .Name }}.{{ index .Labels \"customLabel\"}}`)"
 ```
 
 This option can be overridden on a container basis with the `traefik.http.routers.Router1.rule` label.
@@ -163,6 +170,8 @@ For example, to declare a middleware [`schemeredirect`](../middlewares/redirects
 
     If you declare multiple middleware with the same name but with different parameters, the middleware fails to be declared.
 
+More information about available middlewares in the dedicated [middlewares section](../middlewares/overview.md).
+
 ### Specific Options
 
 #### `traefik.enable`