add gohtmltmpl fix to vim config

.vim/filetype.vim

@@ -130,3 +130,14 @@ augroup end
 augroup rust
   autocmd FileType rust nnoremap <Leader>lg <cmd>lua rust_where_at_line()<CR>
 augroup end
+
+function DetectGoHtmlTmpl()
+    if expand('%:e') == "html" && search("{{") != 0
+        setfiletype gohtmltmpl
+    endif
+endfunction
+
+augroup filetypedetect
+    " gohtmltmpl
+    au BufRead,BufNewFile *.html call DetectGoHtmlTmpl()
+augroup END