Separate opcodes page for each TEAL version

[jasonpaulos]

Companion PR to algorand/go-algorand#5629, which generates a TEAL_opcodes_v%d.md file for each TEAL version, instead of just a single TEAL_opcodes.md file.

This change allows the docs site to show all available opcodes markdown files.

The real change is in scripts/reformat-all-commands.sh, which changes how the files are copied in from go-algorand.

[ryanRfox]

Please modify the links to jsonspec.md in the following files:

• v9.md
• v8.md
• v7.md

Check this section of code for the invalid link (in needs to be one level prior):

## json_ref

- Syntax: `json_ref R` ∋ R: [json_ref](#field-group-json_ref)
- Bytecode: 0x5f {uint8}
- Stack: ..., A: []byte, B: []byte → ..., any
- key B's value, of type R, from a [valid](jsonspec.md) utf-8 encoded json object A
- **Cost**: 25 + 2 per 7 bytes of A
- Availability: v7

I'll suggest:

- key B's value, of type R, from a valid utf-8 encoded json object A (see: [JSON Spec](../jsonspec.md))

[jasonpaulos]

Good catch @ryanRfox. I've updated the script to fix that link, and I have regenerated the files based on the latest go-algorand changes

[nullun]

Thanks for doing this! I made a small PR to your fork that updates the links to the latest opcode version, but otherwise I'm happy with it. https://github.com/jasonpaulos/algorand-docs/pull/1/files