Fix textblock about incorrect symbols (html)

send.go

@@ -90,7 +90,7 @@ func NormalizeHTMLforTelegram(s string) (out string) {
 			}
 			TxtContent := strings.TrimSpace(html.UnescapeString(string(domDocTest.Text())))
 			if len(TxtContent) > 0 {
-				out += TxtContent
+				out += html.EscapeString(TxtContent)
 			}
 		}
 	}