chore: Add scriptencoding to satisfy vint linter

Author: alerque

after/ftplugin/markdown.vim

@@ -10,6 +10,8 @@
 "
 " original version from Steve Losh's gist: https://gist.github.com/1038710
 
+scriptencoding utf-8
+
 function! s:is_mkdCode(lnum)
  let name = synIDattr(synID(a:lnum, 1, 0), 'name')
  return (name =~# '^mkd\%(Code$\|Snippet\)' || name !=# '' && name !~? '^\%(mkd\|html\)')

ftdetect/markdown.vim

@@ -2,6 +2,8 @@
 " SPDX-FileCopyrightText: © 2009 Benjamin D. Williams <benw@plasticboy.com>
 " SPDX-License-Identifier: MIT
 
+scriptencoding utf-8
+
 if !has('patch-7.4.480')
  " Before this patch, vim used modula2 for .md.
  autocmd! filetypedetect BufRead,BufNewFile *.md

ftplugin/markdown.vim

@@ -2,6 +2,8 @@
 " SPDX-FileCopyrightText: © 2009 Benjamin D. Williams <benw@plasticboy.com>
 " SPDX-License-Identifier: MIT
 
+scriptencoding utf-8
+
 "TODO print messages when on visual mode. I only see VISUAL, not the messages.
 
 " Function interface philosophy:

indent/markdown.vim

@@ -2,6 +2,8 @@
 " SPDX-FileCopyrightText: © 2009 Benjamin D. Williams <benw@plasticboy.com>
 " SPDX-License-Identifier: MIT
 
+scriptencoding utf-8
+
 if exists('b:did_indent') | finish | endif
 let b:did_indent = 1
 

syntax/markdown.vim

@@ -2,6 +2,8 @@
 " SPDX-FileCopyrightText: © 2009 Benjamin D. Williams <benw@plasticboy.com>
 " SPDX-License-Identifier: MIT
 
+scriptencoding utf-8
+
 " Read the HTML syntax to start with
 if v:version < 600
  source <sfile>:p:h/html.vim