gen_vimdoc.py: fix deprecated check

scripts/gen_vimdoc.py

@@ -637,7 +637,7 @@ def extract_from_xml(filename, mode, fmt_vimhelp):
         if INCLUDE_C_DECL:
             fn['c_decl'] = c_decl
 
-        if 'Deprecated' in xrefs:
+        if 'Deprecated' in str(xrefs):
             deprecated_functions[name] = fn
         elif name.startswith(CONFIG[mode]['func_name_prefix']):
             functions[name] = fn

src/nvim/api/vim.c

@@ -457,6 +457,7 @@ Object nvim_eval(String expr, Error *err)
 }
 
 /// @deprecated Use nvim_exec_lua() instead.
+/// @see nvim_exec_lua
 Object nvim_execute_lua(String code, Array args, Error *err)
   FUNC_API_SINCE(3)
   FUNC_API_DEPRECATED_SINCE(7)