[mutter] gschema: Add "kms-modifiers" experimental feature description

[Marge Bot <marge-bot src gnome org>]

commit 49aa8014543ccbe6e84074e6cf684796c04d1b97
Author: Robert Mader <robert mader posteo de>
Date:   Mon Aug 9 11:46:15 2021 +0200

    gschema: Add "kms-modifiers" experimental feature description
    
    To make it more discoverable. While on it, fix a typo.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1961>

 data/org.gnome.mutter.gschema.xml.in | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/data/org.gnome.mutter.gschema.xml.in b/data/org.gnome.mutter.gschema.xml.in
index db7c840aac..0ebdf9257a 100644
--- a/data/org.gnome.mutter.gschema.xml.in
+++ b/data/org.gnome.mutter.gschema.xml.in
@@ -121,10 +121,15 @@
                                         to manage HiDPI monitors. Does not
                                         require a restart.
 
+        • “kms-modifiers”             — makes mutter always advertise valid
+                                        buffer modifiers on Wayland. This is
+                                        currently not the case when using the
+                                        i915 driver. Does not require a restart.
+
         • “rt-scheduler”              — makes mutter request a low priority
                                         real-time scheduling. Requires a restart.
 
-        • “dma-buf-screen-sharing"    — enables DMA buffered screen sharing. This
+        • “dma-buf-screen-sharing”    — enables DMA buffered screen sharing. This
                                         is already enabled by default when using
                                         the i915 driver, but disabled for 
                                         everything else. Requires a restart.