Failed to launch in neovim 0.9.5

```
$ nvim --version
NVIM v0.9.5
Build type: Release
LuaJIT 2.1.1696795921

system vimrc file: "$VIM/sysinit.vim"
fall-back for $VIM: "/usr/share/nvim"

Run :checkhealth for more info
```

```
:ChatGPT

Error executing Lua callback: ....local/share/nvim/lazy/ChatGPT.nvim/lua/chatgpt/help.lua:43: attempt to concatenate a table value
stack traceback:
....local/share/nvim/lazy/ChatGPT.nvim/lua/chatgpt/help.lua:43: in function 'get_help_panel'
...e/nvim/lazy/ChatGPT.nvim/lua/chatgpt/flows/chat/base.lua:727: in function 'open'
...e/nvim/lazy/ChatGPT.nvim/lua/chatgpt/flows/chat/init.lua:14: in function 'open_chat'
...nluc/.local/share/nvim/lazy/ChatGPT.nvim/lua/chatgpt.lua:34: in function 'openChat'
...c/.local/share/nvim/lazy/ChatGPT.nvim/plugin/chatgpt.lua:2: in function <...c/.local/share/nvim/lazy/ChatGPT.nvim/plugin/chatgpt.lua:1>
```

Start by reproducing :ChatGPT on Neovim 0.9.5, then inspect lua/chatgpt/help.lua at line 43 and the get_help_panel call from flows/chat/base.lua. Determine which value is being concatenated as a table, and verify that the help panel opens without the Lua callback error.

Written by the indexing model from the issue text.