fix: rename nuclear-net.md to nuclearnet.md for consistency

Author: TrentHouliston

docs/explanation/index.md

@@ -13,5 +13,5 @@ If you've already followed the tutorials and know how to use NUClear, this is wh
 | [Lifecycle](lifecycle.md)         | The three phases of a NUClear system: initialisation, execution, and shutdown                 |
 | [The DSL System](dsl-system.md)   | How `on<>().then()` works from top to bottom — template metaprogramming in action             |
 | [Message Flow](message-flow.md)   | What happens when you emit data, from call site to reaction execution                         |
-| [NUClearNet](nuclear-net.md)      | The peer-to-peer networking mesh that connects NUClear instances                              |
+| [NUClearNet](nuclearnet.md)      | The peer-to-peer networking mesh that connects NUClear instances                              |
 | [Serialization](serialization.md) | How data is converted for network transmission                                                |

docs/explanation/nuclear-net.md docs/explanation/nuclearnet.mddocs/explanation/nuclear-net.md renamed to docs/explanation/nuclearnet.md

@@ -86,5 +86,5 @@ on<Network<SensorReading>>().then([](const NetworkSource& src, const SensorReadi
 
 - [emit/Network](../emit/network.md) — emitting messages to the network
 - [UDP](udp.md) — raw UDP communication
-- [Nuclear Networking](../../explanation/nuclear-net.md) — how the network protocol works
+- [Nuclear Networking](../../explanation/nuclearnet.md) — how the network protocol works
 - [Networking How-To](../../how-to/networking.md) — practical networking guide

docs/reference/dsl/network.md

@@ -184,7 +184,7 @@ nav:
       - Lifecycle: explanation/lifecycle.md
       - The DSL System: explanation/dsl-system.md
       - Message Flow: explanation/message-flow.md
-      - NUClearNet: explanation/nuclear-net.md
+      - NUClearNet: explanation/nuclearnet.md
       - Serialization: explanation/serialization.md
   - Contributing:
       - contributing/index.md