[hitori] Renamed the romanian figure to match the naming scheme in the po file.

[Daniel Șerbănescu <dsj src gnome org>]

commit 0452c2d44a04ee98f974b94ae5afef98ff459968
Author: Daniel Șerbănescu <daniel serbanescu dk>
Date:   Thu Feb 14 20:07:31 2019 +0100

    Renamed the romanian figure to match the naming scheme in the po file.

 .../{hitori-main-window.png => hitori_main_window.png}      | Bin
 1 file changed, 0 insertions(+), 0 deletions(-)
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diff --git a/help/ro/figures/hitori-main-window.png b/help/ro/figures/hitori_main_window.png
similarity index 100%
rename from help/ro/figures/hitori-main-window.png
rename to help/ro/figures/hitori_main_window.png