Fix constant name typo.

The string resource constant referred to in `InputParser.java`:

        error(R.string.input_parser_invalid_litecoin_uri, input);

seems to be a typo, as there is no such string resource. There is, however:

	<string name="input_parser_invalid_Litecoin_uri">Invalid Litecoin URI:\n%s</string

Note the `_litecoin_` -- `_Litecoin_` typo.