Add a tutorial for initialization handling

NEWS.md

@@ -50,7 +50,7 @@
     the `parameter_dependencies` keyword argument of `ODESystem`, `SDESystem` and `JumpSystem`. The dependent
     parameters are updated whenever other parameters are modified, e.g. in callbacks.
   - Support for `IfElse.jl` has been dropped. `Base.ifelse` can be used instead.
-  - DAE initailization and the solving for consistent initial conditions has been changed to use a customized
+  - DAE initialization and the solving for consistent initial conditions has been changed to use a customized
     initialization solve. This change adds `guess` semantics which are clearly delinated from the behavior of
     the defaults, where `default` (and `u0`) is designed to be always satisfied and error if unsatisfiable,
     while `guess` is an initial guess to the initializer. In previous iterations, initialization with the

docs/pages.jl

@@ -3,6 +3,7 @@ pages = [
     "tutorials/ode_modeling.md",
     "Tutorials" => Any["tutorials/acausal_components.md",
         "tutorials/nonlinear.md",
+        "tutorials/initialization.md",
         "tutorials/optimization.md",
         "tutorials/modelingtoolkitize.md",
         "tutorials/programmatically_generating.md",

docs/src/basics/MTKModel_Connector.md

@@ -140,7 +140,7 @@ julia> @mtkbuild model_c2 = ModelC(; p1 = 2.0)
   - Whenever components are created with `@named` macro, these can be accessed with `.` operator as `subcomponent_name.argname`
   - In the above example, as `k` of `model_a` isn't listed while defining the sub-component in `ModelC`, its default value can't be modified by users. While `k_array` can be set as:
 
-```@example mtkmodel-example
+```julia
 using ModelingToolkit: getdefault
 
 @mtkbuild model_c3 = ModelC(; model_a.k_array = [1.0, 2.0])