Update method-syntax.md

[acgtyrant]

make the definition of static methods explicit

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @steveklabnik (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. The way Github handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

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[brson]

@bors: r+ rollup

[bors]

📌 Commit 544362c has been approved by brson

[steveklabnik]

These should actually be called 'associated functions' rather than static methods. I had thought I put a patch in fixing this...

[brson]

@steveklabnik should we cancel this one?

[bors]

⌛ Testing commit 544362c with merge 95400c5...

[bors]

☀️ Test successful - auto-linux-32-nopt-t, auto-linux-32-opt, auto-linux-64-nopt-t, auto-linux-64-opt, auto-linux-64-x-android-t, auto-mac-32-opt, auto-mac-64-nopt-t, auto-mac-64-opt, auto-win-32-nopt-t, auto-win-32-opt, auto-win-64-nopt-t, auto-win-64-opt