Update static code example

[Bassetts]

Updates thes static code example on the index page to match the dynamic
code example.

[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.

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[Bassetts]

As I was touching the example code I thought it made sense to add missing exclamation marks and to move the exclamation mark in the Persian example as per #1190.