translation(it): Fix filemode of Italian manpages

closes: #15544

Signed-off-by: Ken Takata <kentkt@csc.jp>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/vim-it.1 b/runtime/doc/vim-it.1
old mode 100755
new mode 100644
diff --git a/runtime/doc/vim-it.UTF-8.1 b/runtime/doc/vim-it.UTF-8.1
old mode 100755
new mode 100644