Fix revert version check

Author: heavenshell

ftplugin/python/pydocstring.vim

@@ -9,10 +9,10 @@ let s:save_cpo = &cpo
 set cpo&vim
 
 " version check
-" if !has('nvim') && (!has('channel') || !has('job'))
-"   echoerr '+channel and +job are required for pydocstring.vim'
-"   finish
-" endif
+if !has('nvim') && (!has('channel') || !has('job'))
+  echoerr '+channel and +job are required for pydocstring.vim'
+  finish
+endif
 
 command! -nargs=0 -range=0 -complete=customlist,pydocstring#insert Pydocstring call pydocstring#insert(<q-args>, <count>, <line1>, <line2>)
 command! -nargs=0 -complete=customlist,pydocstring#format PydocstringFormat call pydocstring#format()