Twenty Twenty-One: Use `esc_url()` for the WordPress.org link in `footer.php`.

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Revision Host PHPPHP PHP (PHP: Hypertext Preprocessor) is a general-purpose scripting language especially suited to web development. PHP code is usually processed on a web server by a PHP interpreter. On a web server, the result of the interpreted and executed PHP code would form the whole or part of an HTTP response. Version DatabaseDatabase A database is an organized collection of data. Access to this data is usually provided by a "database management system" (DBMS) consisting of an integrated set of computer software that allows users to interact with one or more databases and provides access to all of the data contained in the database. Because of the close relationship between them, the term "database" is often used casually to refer to both a database and the DBMS used to manipulate it. Version
r49762: Twenty Twenty-One: Use `esc_url()` for the WordPress.orgWordPress.org The community site where WordPress code is created and shared by the users. This is where you can download the source code for WordPress core, plugins and themes as well as the central location for community conversations and organization. https://wordpress.org/ link in `footer.php`.
Passed AMIMOTO PHP 7.4.11 mysqlMySQL MySQL is an open-source relational database management system (RDBMS). MySQL is free and open-source software under the terms of the GNU General Public License. Ver 14.14 Distrib 5.7.31
Passed Altis by Human Made PHP 7.2.29-1+ubuntu16.04.1+deb.sury.org+1 mysql Ver 14.14 Distrib 5.7.32
Passed IONOS PHP 7.3.25 mysql Ver 15.1 Distrib 10.3.25-MariaDBMariaDB MariaDB is a fork of the MySQL relational database management system (RDBMS), intended to remain free and open-source software under the GNU General Public License. MariaDB intended to maintain high compatibility with MySQL, ensuring a drop-in replacement capability with library binary parity and exact matching with MySQL APIs and commands.
Passed Morgan Digital PHP 7.4.13 mysql Ver 15.1 Distrib 10.5.8-MariaDB
Passed Nexcess PHP 7.3.25 mysql Ver 15.1 Distrib 10.2.30-MariaDB
Passed Pantheon PHP 7.2.34 mysql Ver 8.0.21 for Linux on x86_64 (Source distribution)
Passed SAKURA internet PHP 7.4.10 mysql Ver 14.14 Distrib 5.7.27
Passed Seravo PHP 8.0.0RC3 mysql Ver 15.1 Distrib 10.5.8-MariaDB
Passed Tuonetti PHP 7.4.13 mysql Ver 15.1 Distrib 10.4.17-MariaDB