patch 8.2.3726: README file in a config directory gets wrong filetype

Problem:    README file in a config directory gets wrong filetype.
Solution:   Match README before patterns that match everything in a directory.

src/testdir/test_filetype.vim

@@ -502,7 +502,7 @@ let s:filename_checks = {
     \ 'tex': ['file.latex', 'file.sty', 'file.dtx', 'file.ltx', 'file.bbl'],
     \ 'texinfo': ['file.texinfo', 'file.texi', 'file.txi'],
     \ 'texmf': ['texmf.cnf'],
-    \ 'text': ['file.text', 'README', '/usr/share/doc/bash-completion/AUTHORS'],
+    \ 'text': ['file.text', 'README', 'LICENSE', 'COPYING', 'AUTHORS', '/usr/share/doc/bash-completion/AUTHORS', '/etc/apt/apt.conf.d/README'],
     \ 'tf': ['file.tf', '.tfrc', 'tfrc'],
     \ 'tidy': ['.tidyrc', 'tidyrc', 'tidy.conf'],
     \ 'tilde': ['file.t.html'],

src/version.c

@@ -753,6 +753,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3726,
 /**/
     3725,
 /**/