Max concurrent RPS is mis-reported as RPS value

[mud2monarch]

Version
0.3.2-11-gc3a2f1d

Platform
M1 MBP on Sonoma 14.6.1
output of uname -a: Darwin CORN-Zach-913.local 23.6.0 Darwin Kernel Version 23.6.0: Mon Jul 29 21:14:30 PDT 2024; root:xnu-10063.141.2~1/RELEASE_ARM64_T6000 arm64

Description
It appears that a user's max concurrent requests setting is mis-assigned to the user's requests-per-second setting.

I tried this code:

I expected max concurrent requests to be set to 10 in both cases, but it was set to whatever value I passed to --requests-per-second.

I believe the error code is in source::parse_source().

It currently reads

max_concurrent_requests: args.requests_per_second.map(|x| x as u64)

but should be changed to

max_concurrent_requests: args.max_concurrent_requests.map(|x| x as u64)

I'll open a PR. Should I add tests? This is my first time contributing to anything so appreciate guidance.

[mud2monarch]

Edit: now see that it's just the CLI output that is mis-assigned? Concurrency is properly set in lines 50-57.