Fix building the doc

Author: chdemko

README.md

@@ -18,14 +18,15 @@ This project uses:
 
 * [PHP Code Sniffer](https://github.com/squizlabs/php_codesniffer) for checking PHP code style
 * [PHPUnit](http://phpunit.de/) for unit test (100% covered)
-* [sphpdox](https://packagist.org/packages/sphpdox/sphpdox) for [documentation](http://php-sorted-collections.readthedocs.io/en/latest/?badge=latest)
+* [Sphinx](https://www.sphinx-doc.org/) and [Doxygen](https://www.doxygen.nl/) for the
+  [documentation](http://php-sorted-collections.readthedocs.io/en/latest/?badge=latest)
 
 Instructions
 ------------
 
 Using composer: either
 
-~~~bash
+~~~shell
 $ composer create-project chdemko/sorted-collections:1.0.*@dev; cd sorted-collections
 ~~~
 
@@ -41,18 +42,10 @@ or create a `composer.json` file containing
 
 and run
 
-~~~bash
+~~~shell
 $ composer install
 ~~~
 
-Run also
-
-~~~bash
-$ [sudo] pip install [--user] -r docs/requirements.txt
-~~~
-
-if you want to create local documentation.
-
 Create a `test.php` file containg
 
 ~~~php
@@ -70,7 +63,7 @@ echo $tree . PHP_EOL;
 
 And run
 
-~~~bash
+~~~shell
 $ php test.php
 ~~~
 
@@ -82,6 +75,24 @@ This should print
 
 See the [examples](https://github.com/chdemko/php-sorted-collections/tree/develop/examples) and [benchmarks](https://github.com/chdemko/php-sorted-collections/tree/develop/benchmarks) folder for more information.
 
+Documentation
+-------------
+
+Run
+
+~~~shell
+$ sudo apt install doxygen python3-pip python3-virtualenv
+$ virtualenv venv
+$ venv/bin/activate
+(venv) $ pip install -r docs/requirements.txt
+(venv) $ sphinx-build -b html docs/ html/
+(venv) $ deactivate
+$
+~~~
+
+if you want to create local documentation with Sphinx.
+
+
 Citation
 --------
 

composer.json

@@ -20,7 +20,6 @@
 		"php-coveralls/php-coveralls": "^2.5",
 		"squizlabs/php_codesniffer": "3.*",
 		"phpunit/phpunit": "^10.2",
-		"sphpdox/sphpdox": "dev-master",
 		"phpbench/phpbench": "^1.2"
 	},
 	"autoload": {
@@ -36,10 +35,6 @@
 	"scripts": {
 		"style": "vendor/bin/phpcs --report=full --extensions=php --standard=PSR12 src tests examples benchmarks",
 		"test": "XDEBUG_MODE=coverage vendor/bin/phpunit --log-junit junit.xml",
-		"doc": [
-			"vendor/bin/sphpdox process --output docs chdemko src",
-			"sphinx-build -b html docs/ html/"
-		],
 		"benchmark": "vendor/bin/phpbench run --report=default"
 	}
 }