docs: elm: fill gaps in config, efl_ui_win and actionslider eo file documentation

src/lib/elementary/efl_config_global.eo

@@ -25,7 +25,7 @@ class Efl.Config.Global (Efl.Object, Efl.Config)
          params {
             profile: string @optional; [[The profile name.]]
          }
-         return: bool;
+         return: bool; [[$true on success, $false otherwise]]
       }
       @property profile {
          [[The profile for the running application.
@@ -41,7 +41,7 @@ class Efl.Config.Global (Efl.Object, Efl.Config)
            Elementary applications.
          ]]
          values {
-            profile: string;
+            profile: string; [[Profile name]]
          }
       }
       profile_iterate {
@@ -50,23 +50,23 @@ class Efl.Config.Global (Efl.Object, Efl.Config)
             hidden: bool @optional; [[If $true, gets the full list of profiles,
                                       including those stored in hidden files.]]
          }
-         return: free(own(iterator<string>), eina_iterator_free);
+         return: free(own(iterator<string>), eina_iterator_free); [[Iterator to profiles]]
       }
       profile_exists {
          [[Returns whether a profile exists or not.]]
          params {
-            profile: string;
+            profile: string; [[Profile name]]
          }
-         return: bool;
+         return: bool; [[$true if profile exists, $false otherwise]]
       }
       profile_dir_get {
          [[Returns the directory where a profile is stored.]]
          params {
-            profile: string;
+            profile: string; [[Profile name]]
             is_user: bool; [[$true to lookup for a user profile or $false for
                              a system one.]]
          }
-         return: own(stringshare);
+         return: own(stringshare); [[Directory of the profile]]
       }
       profile_derived_add @protected {
          [[Add a new profile of the given name to be derived from the current

src/lib/elementary/efl_ui_win_internal_part.eo

@@ -1,5 +1,6 @@
 class Efl.Ui.Win.Internal.Part (Efl.Object, Efl.Container, Efl.Gfx, Efl.File)
 {
+   [[Efl UI window interal part class]]
    data: Elm_Part_Data;
    implements {
       Efl.Object.destructor;

src/lib/elementary/elm_actionslider.eo

@@ -83,5 +83,4 @@ class Elm.Actionslider (Elm.Layout, Efl.Ui.Selectable)
    events {
       pos_changed; [[The position of the actionslider has changed]]
    }
-
 }