[mutter] Fix some of introspection comment issues

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit c65617cb5af823d074deeb02d3b60dcbc6e7723a
Author: Jonas Ådahl <jadahl gmail com>
Date:   Mon Jul 16 16:25:20 2018 +0200

    Fix some of introspection comment issues
    
    Missing colon and incorrect type reference in descriptions.

 src/core/display.c         | 4 ++--
 src/x11/meta-x11-display.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/core/display.c b/src/core/display.c
index 0bd245a92..9a041dcb7 100644
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -23,7 +23,7 @@
 /**
  * SECTION:display
  * @title: MetaDisplay
- * @short_description: Mutter X display handler
+ * @short_description: Mutter display representation
  *
  * The display is represented as a #MetaDisplay struct.
  */
@@ -3610,7 +3610,7 @@ meta_display_focus_default_window (MetaDisplay *display,
  * meta_display_get_workspace_manager:
  * @display: a #MetaDisplay
  *
- * Returns: (transfer none) The workspace manager of the display
+ * Returns: (transfer none): The workspace manager of the display
  */
 MetaWorkspaceManager *
 meta_display_get_workspace_manager (MetaDisplay *display)
diff --git a/src/x11/meta-x11-display.c b/src/x11/meta-x11-display.c
index 485d04b88..c35f17336 100644
--- a/src/x11/meta-x11-display.c
+++ b/src/x11/meta-x11-display.c
@@ -21,7 +21,7 @@
  */
 
 /**
- * SECTION:display
+ * SECTION:x11-display
  * @title: MetaX11Display
  * @short_description: Mutter X display handler
  *