Restoted the erroneously deleted line.

h-east · h-east · commit a4484cae78a8 · 2018-08-14T20:09:34.000+09:00
diff --git a/doc/pi_netrw.jax b/doc/pi_netrw.jax
@@ -4007,4 +4007,5 @@ netrw かあるいは関与している他のプラグインと衝突してい
 	                           operation
 
 ==============================================================================
+Modelines: {{{1
  vim:tw=78:ts=8:noet:ft=help:norl:fdm=marker
