pct-config: add page (#17632)

Create pct-config.md

pages/linux/pct-config.md

@@ -0,0 +1,16 @@
+# pct config
+
+> Print the configuration of a container.
+> More information: <https://pve.proxmox.com/pve-docs/pct.1.html>.
+
+- Display the saved configuration:
+
+`pct config {{100}}`
+
+- Display the running configuration without pending changes:
+
+`pct config {{100}} --current`
+
+- Display configuration of a specific snapshot:
+
+`pct config {{100}} --snapshot {{snapshot_name}}`