Merge branch 'lv/add-doc-working-tree' into maint

* lv/add-doc-working-tree:
  git-add doc: do not say working directory when you mean working tree

Documentation/git-add.txt

@@ -24,7 +24,7 @@ remove paths that do not exist in the working tree anymore.
 
 The "index" holds a snapshot of the content of the working tree, and it
 is this snapshot that is taken as the contents of the next commit.  Thus
-after making any changes to the working directory, and before running
+after making any changes to the working tree, and before running
 the commit command, you must use the `add` command to add any new or
 modified files to the index.