Docs are broken about bevy_ggrs

[gschup]

Thanks for the report. Looking into the build logs on docs.rs, this seems to be a problem with bevy_ecs on nightly rust, which is used there.

[INFO] [stderr]     Checking bevy_ecs v0.6.0
[INFO] [stderr] error: format argument must be a string literal
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bevy_ecs-0.6.0/src/schedule/executor_parallel.rs:135:66
[INFO] [stderr]     |
[INFO] [stderr] 135 | ...                   .unwrap_or_else(|error| unreachable!(error));
[INFO] [stderr]     |                                                            ^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: you might be missing a string literal to format with
[INFO] [stderr]     |
[INFO] [stderr] 135 |                             .unwrap_or_else(|error| unreachable!("{}", error));
[INFO] [stderr]     |                                                                  +++++
[INFO] [stderr] 
[INFO] [stderr] error: format argument must be a string literal

If I run cargo doc --open locally, using stable rust, the docs build just fine. Small disclaimer: As it stands, bevy_ggrs does not have very good documentation. I recommend checking out the examples or the documentation of ggrs itself.

[gschup]

While I was unable to resolve the issue for 0.9, bevy_ggrs 0.10 has built docs on docs.rs.