doc: avoid super long line in netplan-dbus.md

Thanks lintian!

Author: slyon

doc/netplan-dbus.md

@@ -27,7 +27,14 @@ The ``/io/netplan/Netplan/config/<ID>`` objects provide a ``io.netplan.Netplan.C
  * ``Get() -> s``: calls **netplan get --root-dir=/run/netplan/config-ID all** and returns the merged YAML config of the the given config object's state
  * ``Set(s:CONFIG_DELTA, s:ORIGIN_HINT) -> b``: calls **netplan set --root-dir=/run/netplan/config-ID --origin-hint=ORIGIN_HINT CONFIG_DELTA**
 
-    CONFIG_DELTA can be something like: ``network.ethernets.eth0.dhcp4=true`` and ORIGIN_HINT can be something like: ``70-snapd`` (it will then write the config to ``70-snapd.yaml``). Once ``Set()`` is called on a config object, all other current and future config objects are being invalidated and cannot ``Set()`` or ``Try()/Apply()`` anymore, due to this pending dirty state. After the dirty config object is rejected via ``Cancel()``, the other config objects are valid again. If the dirty config object is accepted via ``Apply()``, newly created config objects will be valid, while the older states will stay invalid.
+    CONFIG_DELTA can be something like: ``network.ethernets.eth0.dhcp4=true`` and
+    ORIGIN_HINT can be something like: ``70-snapd`` (it will then write the config
+    to ``70-snapd.yaml``). Once ``Set()`` is called on a config object, all other
+    current and future config objects are being invalidated and cannot ``Set()`` or
+    ``Try()/Apply()`` anymore, due to this pending dirty state. After the dirty
+    config object is rejected via ``Cancel()``, the other config objects are valid
+    again. If the dirty config object is accepted via ``Apply()``, newly created
+    config objects will be valid, while the older states will stay invalid.
 
  * ``Try(u:TIMEOUT_SEC) -> b``: replaces the main netplan configuration with this config object's state and calls **netplan try --timeout=TIMEOUT_SEC**
  * ``Cancel() -> b``: rejects a currently running ``Try()`` attempt on this config object and/or discards the config object