Update docs

docs/contribute/addnode.qmd

@@ -12,7 +12,7 @@ The parameters object (defined in `solve.jl`) passed to the ODE solver must be m
 
 ```julia
 struct NewNodeType
-    node_id::Vector{Int}
+    node_id::Vector{NodeID}
     # Other fields
 end
 ```
@@ -57,7 +57,7 @@ function NewNodeType(db::DB, config::Config)::NewNodeType
 
     # Unpack the fields of static as inputs for the NewNodeType constructor
     return NewNodeType(
-        parsed_parameters.node_id,
+        NodeID.(parsed_parameters.node_id),
         parsed_parameters.some_property,
         parsed_parameters.control_mapping)
 end
@@ -189,13 +189,13 @@ class NewNodeTypeStatic:
 
 The new node type might have associated restrictions for a model with the new node type so that it behaves properly. Basic node ID and node type validation happens in `Model.validate_model` in `python/ribasim/ribasim/model.py`, which automatically considers all node types in the `node_types` module.
 
-Connectivity validation happens in `valid_edges` and `valid_n_flow_neighbors` in `core/src/solve.jl`. Connectivity rules are specified in `core/src/validation.jl`. Allowed upstream and downstream neighbor types for `NewNodeType` in are specified as follows:
+Connectivity validation happens in `valid_edges` and `valid_n_flow_neighbors` in `core/src/solve.jl`. Connectivity rules are specified in `core/src/validation.jl`. Allowed upstream and downstream neighbor types for `new_node_type` (the snake case version of `NewNodeType`) are specified as follows:
 
 ```julia
 # set allowed downstream types
-neighbortypes(::Val{:NewNodeType}) = Set((:Basin,))
+neighbortypes(::Val{:new_node_type}) = Set((:basin,))
 # add your newnodetype as acceptable downstream connection of other types
-neighbortypes(::Val{:Pump}) = Set((:Basin, :NewNodeType))
+neighbortypes(::Val{:pump}) = Set((:basin, :new_node_type))
 ```
 
 The minimum and maximum allowed number of inneighbors and outneighbors for `NewNodeType` are specified as follows: