fix(last-release): normalized registry url

test/specs/last-release.js

@@ -4,7 +4,7 @@ require('../mocks/registry')
 const lastRelease = require('../../dist/lib/last-release')
 
 const npmConfig = {
-  registry: 'http://registry.npmjs.org'
+  registry: 'http://registry.npmjs.org/'
 }
 
 test('last release from registry', (t) => {

test/specs/pre.js

@@ -18,7 +18,7 @@ test('full pre run', (t) => {
     pre({
       name: 'available'
     }, {
-      registry: 'http://registry.npmjs.org'
+      registry: 'http://registry.npmjs.org/'
     },
     plugins,
     (err, release) => {
@@ -34,7 +34,7 @@ test('full pre run', (t) => {
     pre({
       name: 'unavailable'
     }, {
-      registry: 'http://registry.npmjs.org'
+      registry: 'http://registry.npmjs.org/'
     },
     plugins,
     (err, release) => {