Add missing commas in README

[cricketts]

This updates the README by adding missing commas in the actions/github-script examples. Without it, I experienced this stack trace which is a little misleading:

SyntaxError: Unexpected identifier 'body'
    at new AsyncFunction (<anonymous>)
    at callAsyncFunction (/home/runner/work/_actions/actions/github-script/v7/dist/index.js:35424:16)
    at main (/home/runner/work/_actions/actions/github-script/v7/dist/index.js:35522:26)
    at /home/runner/work/_actions/actions/github-script/v7/dist/index.js:35497:1
    at /home/runner/work/_actions/actions/github-script/v7/dist/index.js:35553:3
    at Object.<anonymous> (/home/runner/work/_actions/actions/github-script/v7/dist/index.js:35556:12)
    at Module._compile (node:internal/modules/cjs/loader:1469:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1548:10)
    at Module.load (node:internal/modules/cjs/loader:1288:[32](https://github.com/wearethorn/hash-matcher/actions/runs/13208329523/job/36876643340#step:16:33))
    at Module._load (node:internal/modules/cjs/loader:1104:12)

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Hi 👋 I just wanted to say thanks for this GitHub Action!