Readme: update link to PHP 8.3

Author: f3l1x

README.md

@@ -80,7 +80,7 @@ Are you ready to deploy your first PHP project to Vercel? Click & Go!
 ## 🤗 Features
 
 - **Architecture**: PHP development server (🚀 fast enough)
-- **PHP version**: 8.3 (https://example-php-8-2.vercel.app)
+- **PHP version**: 8.3 (https://example-php-8-3.vercel.app)
 - **Extensions**: apcu, bcmath, brotli, bz2, calendar, Core, ctype, curl, date, dom, ds, exif, fileinfo, filter, ftp, geoip, gettext, hash, iconv, igbinary, imap, intl, json, libxml, lua, mbstring, mongodb, msgpack, mysqli, mysqlnd, openssl, pcntl, pcre, PDO, pdo_mysql, pdo_pgsql, pdo_sqlite, pgsql, phalcon, Phar, protobuf, readline, redis, Reflection, runkit7, session, SimpleXML, soap, sockets, sodium, SPL, sqlite3, standard, swoole, timecop, tokenizer, uuid, xml, xmlreader, xmlrpc, xmlwriter, xsl, Zend OPcache, zlib, zip
 - **Speed**: cold ~250ms / warm ~5ms
 - **Memory**: ~90mb