docs: last variables found added to the README

roles/raspberrypi/meta/main.yml

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+---
+argument_specs:
+  main:
+    short_description: Adjust some Raspberry Pi specific requisites
+    options:
+      state:
+        default: present
+        description:
+          - Indicates whether the k3s prerequisites for Raspberry Pi should be
+          - set up (possible values are `present` and `absent`)

roles/reset_proxmox_lxc/meta/main.yml

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+---
+argument_specs:
+  main:
+    short_description: Proxmox LXC settings
+    options:
+      proxmox_lxc_ct_ids:
+        description: Proxmox container ID list
+        type: list
+        required: true