chore: update example config

misc/config/example.yaml

@@ -91,17 +91,23 @@ rules:
   # To make these rules working across desktop environments,
   # please take a look on https://systemd.io/DESKTOP_ENVIRONMENTS/.
   # NOTE:
-  # | Desktop Environment | Launcher  |
-  # |---------------------|-----------|
-  # | GNOME               | `"gnome"` |
-  # | dde                 | `"DDE"`   |
-  # | KDE                 | none      |
-  # So we should use `(?:-(?:gnome|DDE))?` to match `-<launcher>`
+  # | Desktop Environment | Launcher    |
+  # |---------------------|-------------|
+  # | GNOME               | `"gnome"`   |
+  # | dde                 | `"DDE"`     |
+  # | KDE                 | none        |
+  # | flatpak             | `"flatpak"` |
+  # So we should use
+  # ```
+  # \/user\.slice\/user-\d+\.slice\/user@\d+\.service\/app\.slice\/app(?:-(?:gnome|DDE|flatpak))?-APPID(?:-.+\.scope|(?:@.+)?\.service)
+  # ```
+  # to match application named `APPID`.
+  # Check https://regex101.com/r/BgZcws/2 for example application cgroup names.
 
   # https://parsec.app/
   # `parsec` should always connect to network directly.
   - match: |-
-      \/user\.slice\/user-\d+\.slice\/user@\d+\.service\/app\.slice\/app(?:-(?:gnome|DDE))?-parsecd-\d+\.(?:service|scope)
+      \/user\.slice\/user-\d+\.slice\/user@\d+\.service\/app\.slice\/app(?:-(?:gnome|DDE|flatpak))?-(?:parsecd|com\.parsecgaming\.parsec)(?:-.+\.scope|(?:@.+)?\.service)
     direct: true
 
   # For any cgroup else, TPROXY to clash-meta.