patch 9.1.1486: documentation issues with Wayland

Problem:  documentation issues with Wayland
          (after v9.1.1485)
Solution: Tweak documentation style. Capitalize the first letter of
          Wayland (Hirohito Higashi)

related: #17619

Signed-off-by: Hirohito Higashi <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/feature.h b/src/feature.h
index 07db96c..145de0b 100644
--- a/src/feature.h
+++ b/src/feature.h
@@ -813,7 +813,7 @@
 #endif
 
 /*
- * +wayland		Unix only.  Include code for the wayland protocol,
+ * +wayland		Unix only.  Include code for the Wayland protocol,
  *                      only works if HAVE_WAYLAND is defined.
  */
 #if defined(FEAT_NORMAL) && defined(UNIX)