ivi-shell: fix minor typos

- ivi-shell/hmi-controller.c:41: a to an
- ivi-shell/hmi-controller.c:1296: Duplicated 'a'
- ivi-shell/ivi-layout-export.h:28: An to A

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

ivi-shell/hmi-controller.c

@@ -38,7 +38,7 @@
  * consists of
  * - In the bottom, a base ivi_layer to group ivi_surfaces of background,
  *   panel, and buttons
- * - Next, a application ivi_layer to show application ivi_surfaces.
+ * - Next, an application ivi_layer to show application ivi_surfaces.
  * - Workspace background ivi_layer to show a ivi_surface of background image.
  * - Workspace ivi_layer to show launcher to launch application with icons.
  *   Paths to binary and icon are defined in weston.ini. The width of this
@@ -1293,7 +1293,7 @@ ivi_hmi_controller_UI_ready(struct wl_client *client,
  * ivi_hmi_controller_workspace_control shall be invoked and to start
  * controlling of workspace. The workspace has several pages to show several
  * groups of applications.
- * The workspace is slid by using ivi-layout to select a a page in layer_set_pos
+ * The workspace is slid by using ivi-layout to select a page in layer_set_pos
  * according to motion. When motion finished, e.g. touch up detected, control is
  * terminated and event:ivi_hmi_controller_workspace_control is notified.
  */

ivi-shell/ivi-layout-export.h

@@ -25,9 +25,9 @@
 
 /**
  * The ivi-layout library supports API set of controlling properties of
- * surface and layer which groups surfaces. An unique ID whose type is integer
+ * surface and layer which groups surfaces. A unique ID whose type is integer is
- * is required to create surface and layer. With the unique ID, surface and
+ * required to create surface and layer. With the unique ID, surface and layer
- * layer are identified to control them. The API set consists of APIs to control
+ * are identified to control them. The API set consists of APIs to control
  * properties of surface and layers about followings,
  * - visibility.
  * - opacity.