docs: helm - correct ingress.hosts in README (#2641)

The ingress.hostname entry listed in the README is erroneous and not used in the ingress.yaml file.

This change corrects the documentation to correctly refer to ingress.hosts and list the default value as given in values.yaml.

***NO_CI***

dev/helm/README.md

@@ -100,7 +100,7 @@ The following table lists the configurable parameters of the Wiki.js chart and t
 | `tolerations`                    | Toleration labels for wiki.jsk pod assignment    | `[]`                                                       |
 | `ingress.enabled`                    | Enable ingress controller resource          | `false`                                                    |
 | `ingress.annotations`                | Ingress annotations                         | `{}`                                                       |
-| `ingress.hostname`                   | URL to address your Wiki.js installation     | `wiki.local`                                             |
+| `ingress.hosts`                      | List of ingress rules                        | `[{"host": "wiki.local", "paths": ["/"]}]`                |
 | `ingress.tls`                        | Ingress TLS configuration                   | `[]`                                                       |
 | `postgresql.enabled`                 | Deploy postgres server (see below)          | `true`                                                     |
 | `postgresql.postgresqlDatabase`        | Postgres database name                      | `wiki`                                                   |