Some example rvt files fail to load

[brockweaver]

Some of the example .rvt files here which are linked from the docs fail to load properly. This is because their file size exceeds 30,000,000 bytes, which is the ASP.NET Core 6 default limit.

I suggest adding the appropriate attribute to the upload path to allow larger files so the example .rvt files can be uploaded without issue.

I've created a PR to fix this.