docs(agents): clarify comment in fetch_github_agents for .opcode.json… #9

Job	Run time
build-linux / Build Linux x86_64	7m 50s
build-macos / Build macOS aarch64-apple-darwin	3m 38s
build-macos / Build macOS x86_64-apple-darwin	13m 58s
build-macos / Create Universal Binary	56s
Create Release	12s
	26m 34s

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