Update ScopeProfiles to Profile relationships diagram to 1-n

[dd-ryanrosario]

Updated the relationship between ScopeProfiles and Profile from 1-1 to 1-n in the relationships diagram. This is a documentation-only change that fixes the diagram to accurately reflect the actual data model.

The protobuf message definition shows:

message ScopeProfiles {
  // The instrumentation scope information for the profiles in this message.
  // Semantically when InstrumentationScope isn't set, it is equivalent with
  // an empty instrumentation scope name (unknown).
  opentelemetry.proto.common.v1.InstrumentationScope scope = 1;

  // A list of Profiles that originate from an instrumentation scope.
  repeated Profile profiles = 2;
  ...
}

The repeated Profile profiles field indicates a one-to-many relationship, where a single ScopeProfiles can contain multiple Profile instances. The inconsistency in the diagram seems to have originated here when removing ProfileContainer.