fix rust-analyzer incorrect-ident-case diagnostic

[CobaltCause]

Using the derive macro in a project with rust-analyzer gives an error complaining that this generated code isn't in the SCREAMING_SNAKE_CASE form. This change makes this diagnostic message go away.

The exact output of rust-analyzer:

processing crate: playground, module: /home/charles/science/rust/playground/src/main.rs
Diagnostic { code: DiagnosticCode("incorrect-ident-case"), message: "Constant `RECURSIVE_COUNT_CustomThing` should have UPPER_SNAKE_CASE name, e.g. `RECURSIVE_COUNT_CUSTOM_THING`", range: 959..979, severity: WeakWarning, unused: false, experimental: false, fixes: None }

diagnostic scan complete

[Manishearth]

needs a rustfmt, otherwise r+!

[fitzgen]

Thanks!

[fitzgen]

Published 1.1.2 with this fix.

[CobaltCause]

Awesome, thanks!