chore: realign contents of .gitattributes

.gitattributes

@@ -5,31 +5,33 @@
 
 # git files
 .gitattributes export-ignore
-.gitignore export-ignore
+.gitignore     export-ignore
 
-# Don't give admin files
-.github/ export-ignore
-admin/ export-ignore
-contributing/ export-ignore
-.editorconfig export-ignore
-.nojekyll export-ignore
+# admin files
+.github/           export-ignore
+admin/             export-ignore
+contributing/      export-ignore
+.editorconfig      export-ignore
 CODE_OF_CONDUCT.md export-ignore
-CONTRIBUTING.md export-ignore
+CONTRIBUTING.md    export-ignore
 
-# They don't want our test files
-tests/AutoReview/ export-ignore
-tests/system/ export-ignore
-utils/ export-ignore
-deptrac.yaml export-ignore
-rector.php export-ignore
-phpunit.xml.dist export-ignore
-phpstan-baseline.neon.dist export-ignore
-phpstan.neon.dist export-ignore
-phpstan-bootstrap.php export-ignore
-.php-cs-fixer.dist.php export-ignore
-.php-cs-fixer.no-header.php export-ignore
+# contributor/development files
+tests/                       export-ignore
+utils/                       export-ignore
+.php-cs-fixer.dist.php       export-ignore
+.php-cs-fixer.no-header.php  export-ignore
 .php-cs-fixer.user-guide.php export-ignore
+deptrac.yaml                 export-ignore
+phpstan-baseline.neon.dist   export-ignore
+phpstan-bootstrap.php        export-ignore
+phpstan.neon.dist            export-ignore
+phpunit.xml.dist             export-ignore
+psalm_autoload.php           export-ignore
+psalm-baseline.php           export-ignore
+psalm.xml                    export-ignore
+rector.php                   export-ignore
 
-# The source user guide, either
+# source user guide
 user_guide_src/ export-ignore
+.nojekyll       export-ignore
 phpdoc.dist.xml export-ignore