chore: update version number in readme on release (#8840)

Updates the version number where it appears in URLs in the README, when
`nom version` is ran. It's looking specifically for patterns like
`/8.17.3/` and `/video.js@8.17.3/`; if we change the README we need to
consider this script.

build/readme-version.js

@@ -0,0 +1,16 @@
+/*
+Replaces the version number in the readme with the current package version.
+Looks for patterns like `/8.17.3/` and `/video.js@8.17.3/`
+*/
+
+const fs = require('fs');
+const path = require('path');
+const version = require('../package.json').version;
+
+let doc = fs.readFileSync(path.join(__dirname, '..', 'README.md'), 'utf8');
+
+doc = doc
+  .replace(/\/video.js@\d\.\d+\.\d+\//g, `/video.js@${version}/`)
+  .replace(/\/\d\.\d+\.\d+\//g, `/${version}/`);
+
+fs.writeFileSync(path.join(__dirname, '..', 'README.md'), doc, 'utf8');

package.json

@@ -77,7 +77,7 @@
     "netlify": "node ./build/netlify.js",
     "netlify-docs": "node ./build/netlify-docs.js",
     "prepublishOnly": "run-p build",
-    "version": "is-prerelease || npm run changelog && git add CHANGELOG.md",
+    "version": "is-prerelease || npm run changelog && node build/readme-version.js && git add CHANGELOG.md README.md",
     "zip": "cd dist && cross-env bestzip \"./video-js-${npm_package_version}.zip\" * && cd .."
   },
   "repository": {