add comment on why these are strings

src/routes/network.js

@@ -23,7 +23,6 @@ const assert = require('assert'),
     HttpError = require('connect-lastmile').HttpError,
     HttpSuccess = require('connect-lastmile').HttpSuccess,
     network = require('../network.js'),
-    reverseProxy = require('../reverseproxy.js'),
     safe = require('safetydance');
 
 async function getBlocklist(req, res, next) {
@@ -36,6 +35,7 @@ async function getBlocklist(req, res, next) {
 async function setBlocklist(req, res, next) {
     assert.strictEqual(typeof req.body, 'object');
 
+    // this is a string to allow comments
     if (typeof req.body.blocklist !== 'string') return next(new HttpError(400, 'blocklist must be a string'));
 
     req.clearTimeout(); // can take a while if there is a lot of network ranges