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docs: clarify PX4 versions associated to latest UXRCE_DDS features (#26005)

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* docs: clarify PX4 versions associated to latest UXRCE_DDS features

Signed-off-by: Beniamino Pozzan <b.pozzan@archangelautonomy.com>

* Update docs/en/middleware/uxrce_dds.md

---------

Signed-off-by: Beniamino Pozzan <b.pozzan@archangelautonomy.com>
Co-authored-by: Hamish Willee <hamishwillee@gmail.com>
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docs/en/middleware/uxrce_dds.md
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@ -321,7 +321,7 @@ The configuration can be done using the [UXRCE-DDS parameters](../advanced_confi
- [UXRCE_DDS_SYNCT](../advanced_config/parameter_reference.md#UXRCE_DDS_SYNCT): Bridge time synchronization enable.
The uXRCE-DDS client module can synchronize the timestamp of the messages exchanged over the bridge.
This is the default configuration. In certain situations, for example during [simulations](../ros2/user_guide.md#ros-gazebo-and-px4-time-synchronization), this feature may be disabled.
- [`UXRCE_DDS_NS_IDX`](../advanced_config/parameter_reference.md#UXRCE_DDS_NS_IDX): Index-based namespace definition
- <Badge type="tip" text="PX4 v1.17" /> [`UXRCE_DDS_NS_IDX`](../advanced_config/parameter_reference.md#UXRCE_DDS_NS_IDX): Index-based namespace definition
Setting this parameter to any value other than `-1` creates a namespace with the prefix `uav_` and the specified value, e.g. `uav_0`, `uav_1`, etc.
See [namespace](#customizing-the-namespace) for methods to define richer or arbitrary namespaces.
@ -540,7 +540,7 @@ Each (`topic`,`type`) pairs defines:
4. The message type (`VehicleOdometry`, `VehicleStatus`, `OffboardControlMode`, etc.) and the ROS 2 package (`px4_msgs`) that is expected to provide the message definition.
5. **(Optional)**: An additional `rate_limit` field (only for publication entries), which specifies the maximum rate (Hz) at which messages will be published on this topic by PX4 to ROS 2.
If left unspecified, the maximum publication rate limit is set to 100 Hz.
6. **(Optional)**: An additional `instance` field (only for publication entries), which lets you select which instance of a [multi-instance topic](./uorb.md#multi-instance) you want to be published to ROS 2.
6. <Badge type="tip" text="main (planned for: PX4 v1.18)" /> **(Optional)**: An additional `instance` field (only for publication entries), which lets you select which instance of a [multi-instance topic](./uorb.md#multi-instance) you want to be published to ROS 2.
If provided, this option changes the ROS 2 topic name of the advertised uORB topic appending the instance number: `fmu/out/[uorb topic name][instance]` (plus eventual namespace and message version).
In the example above the final topic name would be `/fmu/out/vehicle_imu1`.