Not displaying lint errors from languagetool for Mandarin texts

## Information

**VIM version**
NVIM v0.4.2
Build type: Release
Operating System: Void Linux x64

## What went wrong

I'm editing a document with Mandarin text and trying to check for grammar errors with 'languagetool'. When 'languagetool' reports an error with Mandarin text in it, I would guess Ale is not parsing the output properly.

When specifying 'zh' as the language nothing happens--but when specifying 'en-GB' as the language, it works as intended. Both 1) running 'languagetool' from the commandline and 2) running :ALELint and then checking :ALEInfo show that there should be errors whether the language is 'zh' or 'en-GB'.

## Reproducing the bug

1. Download '[https://languagetool.org/download/LanguageTool-4.7.zip](languagetool-4.7 desktop version)' and openjdk 1.8.0_202
2. relevant lines in vimrc
```vim
let b:ale_languagetool_executable = 'java'
let b:ale_languagetool_options = '-jar ${XDG_DATA_HOME}/LanguageTool-4.7
\/languagetool-commandline.jar -l zh'
let g:ale_linters = {'markdown': ['languagetool']}
let g:ale_linters_explicit = 1
```
(Change ale_languagetool_options to `-l en-GB` to see Ale reporting lint errors properly)

3. Sample text called 'c.md'
```
一墙之隔的两个。较差的阿三翻阅

I love to write paeprs I would write one every day if I had the time.
```

4. Run :ALELint

### :ALEInfo
```
Current Filetype: markdown
Available Linters: ['alex', 'languagetool', 'markdownlint', 'mdl', 'proselint', 'redpen', 'remark_lint', 'textlint', 'vale', 'writegood']
Linter Aliases:
'remark_lint' -> ['remark-lint']
'writegood' -> ['write-good']
Enabled Linters: ['languagetool']
Suggested Fixers:
'prettier' - Apply prettier to a file.
'remove_trailing_lines' - Remove all blank lines at the end of a file.
'textlint' - Fix text files with textlint --fix
'trim_whitespace' - Remove all trailing whitespace characters at the end of every line.
Linter Variables:

let g:ale_markdown_remark_lint_executable = 'remark'
let g:ale_markdown_remark_lint_options = ''
let g:ale_markdown_remark_lint_use_global = 0
Global Variables:

let g:ale_cache_executable_check_failures = v:null
let g:ale_change_sign_column_color = 0
let g:ale_command_wrapper = ''
let g:ale_completion_delay = 100
let g:ale_completion_enabled = 1
let g:ale_completion_max_suggestions = 50
let g:ale_echo_cursor = 1
let g:ale_echo_msg_error_str = 'Error'
let g:ale_echo_msg_format = '%code: %%s'
let g:ale_echo_msg_info_str = 'Info'
let g:ale_echo_msg_warning_str = 'Warning'
let g:ale_enabled = 1
let g:ale_fix_on_save = 0
let g:ale_fixers = {}
let g:ale_history_enabled = 1
let g:ale_history_log_output = 1
let g:ale_keep_list_window_open = 0
let g:ale_lint_delay = 200
let g:ale_lint_on_enter = 0
let g:ale_lint_on_filetype_changed = 1
let g:ale_lint_on_insert_leave = 1
let g:ale_lint_on_save = 1
let g:ale_lint_on_text_changed = 'never'
let g:ale_linter_aliases = {}
let g:ale_linters = {'markdown': ['languagetool']}
let g:ale_linters_explicit = 1
let g:ale_list_vertical = 0
let g:ale_list_window_size = 10
let g:ale_loclist_msg_format = '%code: %%s'
let g:ale_lsp_root = {}
let g:ale_max_buffer_history_size = 20
let g:ale_max_signs = -1
let g:ale_maximum_file_size = v:null
let g:ale_open_list = 0
let g:ale_pattern_options = v:null
let g:ale_pattern_options_enabled = v:null
let g:ale_set_balloons = 0
let g:ale_set_highlights = 1
let g:ale_set_loclist = 1
let g:ale_set_quickfix = 0
let g:ale_set_signs = 1
let g:ale_sign_column_always = 0
let g:ale_sign_error = '✖'
let g:ale_sign_info = 'ℹ'
let g:ale_sign_offset = 1000000
let g:ale_sign_style_error = '✖'
let g:ale_sign_style_warning = '⚠'
let g:ale_sign_warning = '⚠'
let g:ale_sign_highlight_linenrs = 0
let g:ale_statusline_format = v:null
let g:ale_type_map = {}
let g:ale_use_global_executables = v:null
let g:ale_virtualtext_cursor = 1
let g:ale_warn_about_trailing_blank_lines = 1
let g:ale_warn_about_trailing_whitespace = 1
Command History:

(executable check - success) java
(finished - exit code 0) ['/bin/bash', '-c', '''java'' -jar ${XDG_DATA_HOME}/LanguageTool-4.7/languagetool-commandline.jar -l zh ''/home/rai/Documents/test/c.md''']

<<>>
1.) Line 1, column 6, Rule ID: wa5[4]
Message: 数词与名词之间一般应存在量词，可能缺少量词。
一墙之隔的两个。较差的阿三翻阅 I love to write paeprs I would writ...
^^

2.) Line 1, column 11, Rule ID: wb4[2]
Message:
动词的修饰一般为‘形容词（副词）+地+动词’。您的意思是否是：差
'地'
翻阅

Suggestion: 地
一墙之隔的两个。较差的阿三翻阅 I love to write paeprs I would write on...
^
Time: 2034ms for 36 sentences (17.7 sentences/sec)
<<>>
```