fix(#2415): disambiguate highlight groups, see :help nvim-tree-highlight-overhaul

Author: alex-courtis

doc/nvim-tree-lua.txt

@@ -2290,7 +2290,7 @@ File Text: >
     NvimTreeSymlink             ModeMsg
 <
 Folder Text: >
-    NvimTreeRootFolder          PreProc
+    NvimTreeRootFolder          Title
     NvimTreeFolderName          Directory
     NvimTreeEmptyFolderName     Directory
     NvimTreeOpenedFolderName    Directory
@@ -2395,6 +2395,7 @@ Diagnostics Folder Highlight: >
 
 2024-01-22: disambiguate highlights sharing groups:
 
+- NvimTreeRootFolder   PreProc   -> Title
 - NvimTreeModified*    Constant  -> Type
 - NvimTreeOpenedHL     Constant  -> Special
 - NvimTreeBookmarkIcon Constant  -> SpecialKey

lua/nvim-tree/appearance.lua

@@ -38,7 +38,7 @@ local DEFAULT_LINKS = {
   NvimTreeSymlink = "ModeMsg",
 
   -- Folder Text
-  NvimTreeRootFolder = "PreProc",
+  NvimTreeRootFolder = "Title",
   NvimTreeFolderName = "Directory",
   NvimTreeEmptyFolderName = "Directory",
   NvimTreeOpenedFolderName = "Directory",