fixed treesitter textobject issue (#763)

lua/lv-treesitter/init.lua

@@ -36,7 +36,7 @@ for obj, suffix in pairs(textobj_suffixes) do
     textobj_move_keymaps["goto_next_start"][textobj_prefixes["goto_next"] .. suffix[1]] = "@" .. obj .. ".outer"
     textobj_move_keymaps["goto_next_end"][textobj_prefixes["goto_next"] .. suffix[2]] = "@" .. obj .. ".outer"
   end
-  if textobj_prefixes["goto_prev"] ~= nil then
+  if textobj_prefixes["goto_previous"] ~= nil then
     textobj_move_keymaps["goto_previous_start"][textobj_prefixes["goto_previous"] .. suffix[2]] = "@" .. obj .. ".outer"
     textobj_move_keymaps["goto_previous_end"][textobj_prefixes["goto_previous"] .. suffix[1]] = "@" .. obj .. ".outer"
   end