Update comments mentioned order of python detection

Author: dangooddd

doc/pyrepl.txt

@@ -287,7 +287,7 @@ Options:
   python_path (string)
       Python interpreter used by pyrepl.nvim. Default: "python".
       Resolution order is: `python_path`, then `g:python3_host_prog`, then
-      `python` from PATH.
+      `python3` from PATH.
   preferred_kernel (string)
       Kernel name moved to the first position in the kernel picker.
       Default: "python3".

lua/pyrepl/python.lua

@@ -14,7 +14,7 @@ local console_completions_running
 ---Resolve Python path from the following candidates:
 ---1) config.python_path;
 ---2) vim.g.python3_host_prog;
----3) "python".
+---3) "python3".
 ---@return string
 function M.get_python_path()
     if python_path_cache then