package/luasql-sqlite3: update the upstream URL in Config.in

Update the upstream URL in the help text in Config.in. This
addresses the 'Invalid(406)' URL status in the package stats
web page output.

Signed-off-by: Mark Corbin <mark@dibsco.co.uk>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/luasql-sqlite3/Config.in

@@ -4,4 +4,4 @@ config BR2_PACKAGE_LUASQL_SQLITE3
 	help
 	  LuaSQL is a simple interface from Lua to a DBMS.
 
-	  http://www.keplerproject.org/luasql
+	  http://keplerproject.github.io/luasql/