nvim: after/plugin: fugitve: Use gS mapping to stash file

While at it, use <Leader>G for :Git.

nvim/.config/nvim/after/plugin/fugitive.vim

@@ -24,8 +24,9 @@ nnoremap <Leader>gR :Git rebase origin/main<CR>
 nnoremap <Leader>g- :Git stash<CR>:e<CR>
 nnoremap <Leader>g+ :Git stash pop<CR>:e<CR>
 nnoremap <Leader>gs :Git<CR>
-nnoremap <Leader>gS :Git<SPACE>
+nnoremap <Leader>gS :Git stash -- %<CR>
 nnoremap <Leader>gw :Gwrite<CR>
+nnoremap <Leader>G  :Git<SPACE>
 
 augroup custom_fugitive
   autocmd!