help: Let's make the help urls more standard, and use ?Target=...&... form.

Change-Id: If9b7f6e50e8e668b7349dae1935ce16965ef19b0
Reviewed-on: https://gerrit.libreoffice.org/58863Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>

sfx2/source/appl/sfxhelp.cxx

@@ -541,9 +541,9 @@ static bool impl_showOnlineHelp( const OUString& rURL )
 
     OUString aHelpLink( "https://help.libreoffice.org/help.html?"  );
 
-    aHelpLink += rURL.copy( aInternal.getLength() );
-    aHelpLink = aHelpLink.replaceAll("%2F","/");
-
+    OUString aTarget = "Target=" + rURL.copy(aInternal.getLength());
+    aTarget = aTarget.replaceAll("%2F", "/").replaceAll("?", "&");
+    aHelpLink += aTarget;
 
     if (comphelper::LibreOfficeKit::isActive())
     {