Fix version in install instructions · RoyalIcing/Orb@f6744ca

The following actions use a deprecated Node.js version and will be forced to run on node20: actions/checkout@v3, actions/cache@v3. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

function do_wasm_type/2 is unused

function extract_wasm_section/2 is unused

function extract_wasm_sections/1 is unused

variable "char" is unused (if the variable is not meant to be used, prefix it with an underscore)

variable "char" is unused (if the variable is not meant to be used, prefix it with an underscore)

variable "i" is unused (if the variable is not meant to be used, prefix it with an underscore)

variable "j" is unused (if the variable is not meant to be used, prefix it with an underscore)

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