Fix/update subsolver api docs

tutorials/introduction-to-jsosolvers/index.jmd

@@ -44,6 +44,13 @@ The solvers `tron` and `trunk` both have a specialized implementation for input
 
 The following examples illustrate this specialization.
 
+To list the allowed least-squares subsolvers for these specializations:
+
+```julia
+JSOSolvers.trunkls_allowed_subsolvers
+JSOSolvers.tronls_allowed_subsolvers
+```
+
 ```julia
 using JSOSolvers, ADNLPModels
 f(x) = (x[1] - 1)^2 + 4 * (x[2] - x[1]^2)^2
@@ -111,7 +118,7 @@ solver = LBFGSSolver(nlp; mem = 5);
 stats = solve!(solver, nlp)
 ```
 
-The following table provides the correspondance between the solvers and the solvers structures:
+The following table provides the correspondence between the algorithms and their solver structures:
 
 | Algorithm           | Solver structure |
 | ------------------- | ---------------- |