🧾 Improve documentation
People have been telling us that the documentation is not up to date or lacking. I would like to track enhancements and improvements in this issue.

Here is a list of areas that could use improvement:
- [x] List of packages is outdated: https://www.mvvmcross.com/documentation/getting-started/mvvmcross-packages
- [ ] View Presenters pages doesn't seem to cover all aspects of the presenter https://www.mvvmcross.com/documentation/fundamentals/view-presenters
  - [ ] `IMvxOverridePresentationAttribute` you have to drill into the platform specific documentation to find this information
  - [ ] Provide better indexing of platform specifics, it is not easy to find in the index on the left (perhaps even switch to a different website generator to solve this)
  - [ ] Hints with support matrix #3402
 - [ ] About page is blank #3863 
 - [ ] Branding page is blank #4056
 - [ ] Update `MvxMessenger` documentation to describe gotchas about GC and tokens #3242
 - [x] Ensure Getting Started documentation is easy to follow. #2857 #4068
   - [ ] Make a small project in the [Samples Repo](https://github.com/MvvmCross/MvvmCross-Samples) that contains a good starting point and document it through a README in that project folder
 - [ ] Finnish documentation for essential controls #2631
 - [x] Fix MvxValueConverter examples #4050
 - [x] Improve Method Binding docs #4052
 - [x] Explain usage of custom bindings #4067

If something is missing in this thread, please add a new comment and description. I will create separate issues for each of the listed areas 

