Untranslated texts

[Jojo-Schmitz]

I found 2 texts that, as they show in a MuseScore dialog, should be translated/translatable, but are not:

Affects the texts "empty document" and "unknown encoding". Code:

muse_framework/framework/global/serialization/xmlstreamreader.cpp

Lines 74 to 97 in 8c223d8

	void XmlStreamReader::setData(const ByteArray& data_)
	{
	TRACEFUNC;
	m_xml->doc.reset();
	m_xml->customErr.clear();
	m_token = TokenType::Invalid;
	if (data_.size() < 4) {
	m_xml->result = pugi::xml_parse_result{}; // zero it
	m_xml->result.status = pugi::status_no_document_element;
	m_xml->customErr = String(u"empty document");
	LOGE() << m_xml->customErr;
	return;
	}
	UtfCodec::Encoding enc = UtfCodec::xmlEncoding(data_);
	if (enc == UtfCodec::Encoding::Unknown) {
	m_xml->result = pugi::xml_parse_result{};
	m_xml->result.status = pugi::status_internal_error;
	m_xml->customErr = String(u"unknown encoding");
	LOGE() << m_xml->customErr;
	return;
	}

Apart from that both strings should probably start with a capital letter