Fix typo in documentation for ODE solver

Author: 1-Bart-1

docs/src/index.md

@@ -11,7 +11,7 @@ Documentation for [SymbolicAWEModels.jl](https://github.com/OpenSourceAWE/Symbol
 SymbolicAWEModels.jl is a **compiler** for mechanical systems, built for
 **Airborne Wind Energy** (AWE) modelling. It takes a structural description
 of a system — defined in Julia code or a YAML file — and compiles it into
-an efficient ODE solver using [ModelingToolkit.jl](https://github.com/SciML/ModelingToolkit.jl).
+an efficient ODE problem using [ModelingToolkit.jl](https://github.com/SciML/ModelingToolkit.jl).
 
 The compilation pipeline works as follows: