Avoid comment lines between docstring and object it attaches to

src/solvers.jl

@@ -155,8 +155,8 @@ the last solution found (or another solution provided externally) using the
 available Jacobians. Due to the missing global convergence, the `SimpleSolver`
 is rarely useful as such.
 """
-#mutable struct SimpleSolver{NLEQ<:ParametricNonLinEq}
 @mutable_struct SimpleSolver{NLEQ<:ParametricNonLinEq} begin
+#mutable struct SimpleSolver{NLEQ<:ParametricNonLinEq}
     nleq::NLEQ
     z::Vector{Float64}
     linsolver::LinearSolver
@@ -257,8 +257,8 @@ can be combined with the `SimpleSolver` as `HomotopySolver{SimpleSolver}` to
 obtain a useful Newton homtopy solver with generally good convergence
 properties.
 """
-#mutable struct HomotopySolver{BaseSolver}
 @mutable_struct HomotopySolver{BaseSolver} begin
+#mutable struct HomotopySolver{BaseSolver}
     basesolver::BaseSolver
     start_p::Vector{Float64}
     pa::Vector{Float64}
@@ -332,8 +332,8 @@ See [M. Holters, U. Zölzer, "A k-d Tree Based Solution Cache for the Non-linear
 Equation of Circuit Simulations"](http://www.eurasip.org/Proceedings/Eusipco/Eusipco2016/papers/1570255150.pdf)
 for a more detailed discussion.
 """
-#mutable struct CachingSolver{BaseSolver}
 @mutable_struct CachingSolver{BaseSolver} begin
+#mutable struct CachingSolver{BaseSolver}
     basesolver::BaseSolver
     ps_tree::KDTree{Vector{Float64}, Matrix{Float64}}
     zs::Matrix{Float64}