build: fix the doc paths

Author: vishalnarkhede

docusaurus/reactnative-docusaurus-dontent-docs.plugin.js

@@ -7,11 +7,11 @@ module.exports = {
         versions: {
           current: {
             label: 'v5.0.0-rc',
+            path: 'v5',
             banner: 'unreleased'
           },
           '4.x.x': {
             label: 'v4',
-            path: 'v4',
             banner: 'none'
           },
           '3.x.x': {