Update cheatsheets

tldr/mcat

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# mcat
+
+> Parse, convert, and preview files (including Markdown), directories, images, and videos.
+> More information: <https://github.com/Skardyy/mcat#example-usage>.
+
+- Display the contents of a file:
+
+`mcat {{path/to/file}}`
+
+- Display a Markdown file with a specific theme:
+
+`mcat {{[-t|--theme]}} {{theme_name}} {{path/to/file.md}}`
+
+- Display an image or video inline:
+
+`mcat {{[-i|--output inline]}} {{path/to/file}}`
+
+- Convert a file to a specific format (e.g. `html`, `md`, `image`):
+
+`mcat {{[-o|--output]}} {{format}} {{path/to/file}}`
+
+- List the contents of a directory:
+
+`mcat {{path/to/directory}}`
+
+- List the contents of a directory, including hidden files:
+
+`mcat {{[-a|--hidden]}} {{path/to/directory}}`
+
+- Display content without paging:
+
+`mcat {{[-P|--paging never]}} {{path/to/file}}`