refactor(plugin): prefix unused param with underscore (#161)

Signed-off-by: Frazer Smith <[email protected]>

plugin.js

@@ -3,7 +3,7 @@
 const fp = require('fastify-plugin')
 const { parse } = require('fast-uri')
 
-function fastifyUrlData (fastify, options, next) {
+function fastifyUrlData (fastify, _options, next) {
   fastify.decorateRequest('urlData', function (key) {
     const scheme = this.headers[':scheme'] ? this.headers[':scheme'] : this.protocol
     const host = this.hostname