update readme

roles/apt/README.md

@@ -157,14 +157,12 @@ Verbose, pattern based
 
 ```yaml
 manala_apt_repositories:
-  - repository: backports
+  - name: backports
     state: absent
 ```
 
 Verbose
 
-Note: although legacy "source" based repositories are still supported, a file ending by .sources MUST be provided
-
 ```yaml
 manala_apt_repositories:
   - name: jenkins
@@ -183,20 +181,6 @@ manala_apt_repositories:
     uris: https://example.com
     suites: foo/
     state: ignore
-  # Legacy
-  - name: jenkins
-    source: deb http://pkg.jenkins-ci.org/debian binary/
-    key:
-      url: http://pkg.jenkins-ci.org/debian/jenkins-ci.org.key
-      id: D50582E6
-  # Legacy
-  - name: proxmox
-    source: deb https://enterprise.proxmox.com/debian {{ ansible_facts.distribution_release }} pve-enterprise
-    state: absent
-  # Ignore repository (Legacy)
-  - name: example
-    source: deb https://example.com foo/
-    state: ignore
   # Flatten repositories
   - "{{ my_custom_repositories_array }}"
 ```