Merge branch 'iterative' of https://github.com/jalvesz/stdlib into iterative

Author: jalvesz

doc/specs/stdlib_linalg_iterative_solvers.md

@@ -121,7 +121,7 @@ Subroutine
 
 `maxiter`: scalar of type `integer` defining the maximum allowed number of iterations. This argument is `intent(in)`.
 
-`workspace`: `type(stdlib_solver_workspace_<kind>_type)` holding the work temporal array for the solver. This argument is `intent(inout)`.
+`workspace`: scalar derived type of `type(stdlib_solver_workspace_<kind>_type)` holding the work array for the solver. This argument is `intent(inout)`.
 
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 ### `solve_cg` subroutine