Fix trees doc names

These are plural

diff --git a/mkosi.md b/mkosi.md
index d0ca1f66c7509df3269426eea5535e3f62cc4174..2d8b4d9d99d4811f146f1a1609db8fe97c5ed5e3 100644 (file)
--- a/mkosi.md
+++ b/mkosi.md
@@ -570,7 +570,7 @@ a boolean argument: either "1", "yes", or "true" to enable, or "0",
   way is mounted into both the development and the final image while
   the package manager is running.
 
-`SkeletonTree=`, `--skeleton-tree=`
+`SkeletonTrees=`, `--skeleton-tree=`
 
 : Takes a colon separated pair of paths. The first path refers to a
   directory to copy into the OS tree before invoking the package
@@ -592,7 +592,7 @@ a boolean argument: either "1", "yes", or "true" to enable, or "0",
   `mkosi.skeleton.tar` is found in the local directory it will be
   automatically used for this purpose.
 
-`ExtraTree=`, `--extra-tree=`
+`ExtraTrees=`, `--extra-tree=`
 
 : Takes a colon separated pair of paths. The first path refers to a
   directory to copy from the host into the image. The second path refers