fixed docu variable name, private scope of internal variables

Author: madox2

README.md

@@ -418,7 +418,7 @@ let g:vim_ai_chat = {
 " - options.enable_auth: enable authorization using openai key
 " - options.token_file_path: override global token configuration
 " - options.download_dir: path to image download directory, `cwd` if not defined
-let g:vim_ai_image_default = {
+let g:vim_ai_image = {
 \  "prompt": "",
 \  "options": {
 \    "model": "dall-e-3",

autoload/vim_ai_config.vim

@@ -8,7 +8,7 @@ Answer shortly, consisely and only what you are asked.
 Do not provide any explanantion or comments if not requested.
 If you answer in a code, do not wrap it in markdown code block.
 END
-let g:vim_ai_complete_default = {
+let s:vim_ai_complete_default = {
 \  "prompt": "",
 \  "engine": "chat",
 \  "options": {
@@ -28,7 +28,7 @@ let g:vim_ai_complete_default = {
 \    "paste_mode": 1,
 \  },
 \}
-let g:vim_ai_edit_default = {
+let s:vim_ai_edit_default = {
 \  "prompt": "",
 \  "engine": "chat",
 \  "options": {
@@ -48,7 +48,7 @@ let g:vim_ai_edit_default = {
 \    "paste_mode": 1,
 \  },
 \}
-let g:vim_ai_image_default = {
+let s:vim_ai_image_default = {
 \  "prompt": "",
 \  "options": {
 \    "model": "dall-e-3",
@@ -71,7 +71,7 @@ let s:initial_chat_prompt =<< trim END
 You are a general assistant.
 If you attach a code block add syntax type after ``` to enable syntax highlighting.
 END
-let g:vim_ai_chat_default = {
+let s:vim_ai_chat_default = {
 \  "prompt": "",
 \  "options": {
 \    "model": "gpt-4o",
@@ -131,7 +131,7 @@ function! vim_ai_config#ExtendDeep(defaults, override) abort
 endfunction
 
 function! s:MakeConfig(config_name) abort
-  let l:defaults = copy(g:[a:config_name . "_default"])
+  let l:defaults = copy(s:[a:config_name . "_default"])
   let l:override = exists("g:" . a:config_name) ? g:[a:config_name] : {}
   let g:[a:config_name] = vim_ai_config#ExtendDeep(l:defaults, l:override)
 endfunction

doc/vim-ai.txt

@@ -29,7 +29,7 @@ Options: >
   If you answer in a code, do not wrap it in markdown code block.
   END
 
-  let g:vim_ai_complete_default = {
+  let g:vim_ai_complete = {
   \  "engine": "chat",
   \  "options": {
   \    "model": "gpt-4o",
@@ -68,7 +68,7 @@ Options: >
   If you answer in a code, do not wrap it in markdown code block.
   END
 
-  let g:vim_ai_edit_default = {
+  let g:vim_ai_edit = {
   \  "engine": "chat",
   \  "options": {
   \    "model": "gpt-4o",
@@ -156,7 +156,7 @@ paths.
                                      the instruction
 
 Options: >
-  let g:vim_ai_image_default = {
+  let g:vim_ai_image = {
   \  "prompt": "",
   \  "options": {
   \    "model": "dall-e-3",