misc.wolfram: add calc as alias

src/modules/misc.js

@@ -77,6 +77,7 @@ wolfram.category = CATEGORY;
 wolfram.helpText = "Wolfram Alpha";
 wolfram.usage = "<-v> [query]";
 wolfram.addAlias("wa");
+wolfram.addAlias("calc");
 wolfram.callback = async function (msg, line, args, {verbose, v}) {
   const _verbose = verbose ?? v;
   const query = args.join(" ");