Update cheatsheets

rector

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# rector
+
+> An automated tool for updating and refactoring PHP 5.3+ code.
+> More information: <https://github.com/rectorphp/rector>.
+
+- Process a specific directory:
+
+`rector process {{path/to/directory}}`
+
+- Process a directory without applying changes (dry run):
+
+`rector process {{path/to/directory}} --dry-run`
+
+- Process a directory and apply coding standards:
+
+`rector process {{path/to/directory}} --with-style`
+
+- Display a list of available levels:
+
+`rector levels`
+
+- Process a directory with a specific level:
+
+`rector process {{path/to/directory}} --level {{level_name}}`