fix typo

README.md

@@ -30,7 +30,7 @@ On the server, checks are performed to make sure the values are safe, but the ch
 const { type, program } = req.body;
 if (
     typeof type !== "string"
-    || type.match(/^[a-zA-Z\-/]{3,}$/) === null  //<-- Any Alphanumeric(plus dashes) string with length >= 3
+    || type.match(/^[a-zA-Z\-/]{3,}$/) === null  //<-- Any Alphanumeric(plus dashes and slashes) string with length >= 3
     || typeof program.name !== "string"
     || typeof program.code !== "string"
     || program.code.length > 10000