vim-patch:8.2.2392: fennel filetype not recognized

Problem:    Fennel filetype not recognized.
Solution:   Detect with pattern and hashbang. (Chinmay Dalal, closes vim/vim#7729)
402115f1c2

src/nvim/testdir/test_filetype.vim

@@ -171,6 +171,7 @@ let s:filename_checks = {
     \ 'factor': ['file.factor'],
     \ 'falcon': ['file.fal'],
     \ 'fan': ['file.fan', 'file.fwt'],
+    \ 'fennel': ['file.fnl'],
     \ 'fetchmail': ['.fetchmailrc'],
     \ 'fgl': ['file.4gl', 'file.4gh', 'file.m4gl'],
     \ 'focexec': ['file.fex', 'file.focexec'],
@@ -622,6 +623,7 @@ let s:script_checks = {
       \         ['// -*- C++ -*-']],
       \ 'yaml': [['%YAML 1.2']],
       \ 'pascal': [['#!/path/instantfpc']],
+      \ 'fennel': [['#!/path/fennel']],
       \ }
 
 " Various forms of "env" optional arguments.