fix highlight for file node (#1157)

* fix #960 953 highlight for file node

* update changelog

CHANGELOG.md

@@ -5,6 +5,7 @@
         - **.PATCH**: Pull Request Title (PR Author) [PR Number](Link to PR)
 -->
 #### 6.9
+- **.5**: Fix highlight for file node.  (pirey) [#1157](https://github.com/preservim/nerdtree/pull/1157)
 - **.4**: Make sure symbolic links' flags are highlighted correctly.  (PhilRunninger) [#1156](https://github.com/preservim/nerdtree/pull/1156)
 - **.3**: Fix new NERDTrees' width when previous one was in the only window. (PhilRunninger) [#1153](https://github.com/preservim/nerdtree/pull/1153)
 - **.2**: Fix the scope of several key mappings (lifecrisis, PhilRunninger) [#1151](https://github.com/preservim/nerdtree/pull/1151)

syntax/nerdtree.vim

@@ -93,3 +93,5 @@ hi def link NERDTreeBookmark Statement
 hi def link NERDTreeFlags Number
 
 hi def link NERDTreeCurrentNode Search
+
+hi NERDTreeFile ctermbg=NONE guibg=NONE