splash.lyx and ru.po: updates from Yuriy

lib/examples/ru/splash.lyx

@@ -193,7 +193,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.lyx.org
+https://www.lyx.org/WebRu.Home
 \end_layout
 
 \end_inset
@@ -208,7 +208,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.lyx.org/Walkthrough
+https://www.lyx.org/WebRu.Walkthrough
 \end_layout
 
 \end_inset
@@ -261,7 +261,11 @@ texlive-lang-cyrillic
 \SpecialChar menuseparator
 
 \family sans
-Переконфигурировать
+Обновить
+\begin_inset space ~
+\end_inset
+
+конфигурацию
 \family default
 .
 \end_layout