docs(advanced-jsosolvers): add explicit trunk call with subsolver and tolerances

Author: arnavk23

tutorials/advanced-jsosolvers/index.jmd

@@ -52,6 +52,13 @@ These linear least squares solvers are implemented in the package [Krylov.jl](ht
 using Krylov
 ```
 
+For example, to call TRUNK with an explicit subsolver and tolerances:
+
+```julia
+RTOL = 1e-6; ATOL = 1e-8; max_time = 60.0
+stats = trunk(nls; subsolver = :cgls, rtol = RTOL, atol = ATOL, max_time = max_time)
+```
+
 We define a dictionary of the different solvers that will be benchmarked.
 We consider here four variants of TRUNK using the different subsolvers.