Update cheatsheets

tldr/picotool

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# picotool
+
+> Manage Raspberry Pi Pico boards.
+> More information: <https://github.com/raspberrypi/picotool>.
+
+- Display information about the currently loaded program on a Pico:
+
+`picotool info`
+
+- Load a binary onto a Pico:
+
+`picotool load {{path/to/binary}}`
+
+- Convert an ELF or BIN file to UF2:
+
+`picotool uf2 convert {{path/to/elf_or_bin}} {{path/to/output}}`
+
+- Reboot a Pico:
+
+`picotool reboot`
+
+- List all known registers:
+
+`picotool otp list`
+
+- Display version:
+
+`picotool version`
+
+- Display help:
+
+`picotool help`