docs: add info on limit for OhDear

[Chris53897]

https://github.com/liip/LiipMonitorBundle/pull/289#issuecomment-1868518201

[kbond]

Should we hard code the results limit to 50 so at least the first 50 run?

[Chris53897]

Good idea. But OhDear can change this limit anytime.

[kbond]

Yeah that's true but right now, none run, correct? I guess we'll just need to update as required...

[kbond]

Did you hit this limit?

[kbond]

The alternative would be to throw an exception I guess. Force users to add to a suite that's size is less than 50. I'd be fine with that also.

[Chris53897]

For now i would suggest to leave it as it is. As there are more important other tasks for me personally. I do not hit this limit.

[kbond]

Fine by me