Update cheatsheets

wat2wasm

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# wat2wasm
+
+> Convert a file from the WebAssembly text format to the binary format.
+> More information: <https://github.com/WebAssembly/wabt>.
+
+- Parse and check a file for errors:
+
+`wat2wasm {{file.wat}}`
+
+- Write the output binary to a given file:
+
+`wat2wasm {{file.wat}} -o {{file.wasm}}`
+
+- Display simplified representation of every byte:
+
+`wat2wasm -v {{file.wat}}`