Fix pattern based on |+feature-list|

Author: k-takata

syntax/help_ja.vim

@@ -2,4 +2,4 @@ scriptencoding utf-8
 
 syn match helpVim "Vim バージョン [0-9.a-z]\+"
 syn match helpVim "VIMリファレンス.*"
-syn region helpNotVi start="{Vim" start="{|+[a-z0-9_]\+|" end="}" contains=helpLeadBlank,helpHyperTextJump
+syn region helpNotVi start="{Vim" start="{|++\?[A-Za-z0-9_/()]\+|" end="}" contains=helpLeadBlank,helpHyperTextJump