Use proper option names for arguments of `Dynamic.Parameter.*.get`

It appears that the alias mechanism does not inform `Dynamic` of the aliases 

src/plugins/markdown-report/eva_coverage.ml

@@ -49,12 +49,12 @@ let is_analyzed_function vi =
          (Mdr_params.Stubs.get())) &&
   not (List.mem vi.vname
          (String.split_on_char ','
-            (Dynamic.Parameter.String.get "-val-use-spec" ()))) &&
+            (Dynamic.Parameter.String.get "-eva-use-spec" ()))) &&
   not (List.mem vi.vname
          (List.map
             (fun s -> List.hd (String.split_on_char ':' s))
             (String.split_on_char ','
-               (Dynamic.Parameter.String.get "-val-builtin" ()))))
+               (Dynamic.Parameter.String.get "-eva-builtin" ()))))
 
 let is_analyzed_info vi info = {info with is_analyzed=is_analyzed_function vi; }
 

src/plugins/markdown-report/md_gen.ml

@@ -93,7 +93,7 @@ let section_stubs env =
       )
   in
   let stubbed_kf = List.filter Kernel_function.is_definition stubbed_kf in
-  let opt = Dynamic.Parameter.String.get "-val-use-spec" () in
+  let opt = Dynamic.Parameter.String.get "-eva-use-spec" () in
   (* NB: requires OCaml >= 4.04 *)
   let l = String.split_on_char ',' opt in
   let use_spec =