Documentation - Repositories - Raw blob content - Data types

What does this MR do?

Corrected the data types in the documentation of the request "Raw blob content" in the resource Repositories. No testing needed and no risk as it's just the documentation.

Screenshots or Screencasts (strongly suggested)

Not needed.

How to setup and validate locally (strongly suggested)

Not needed.

Does this MR meet the acceptance criteria?

Conformity

• [ X ] I have added/updated documentation, or it's not needed. (Is documentation required?)

Availability and Testing

Not needed.

Security

Not needed.