📝 [Docs] - change example data from test code

[41ow1ives]

dataverse version checks

• I have checked that the issue still exists on the latest versions of the dataverse.

Location of the documentation

dataverse/tests

Documentation problem

at some file, such as dataverse/test/test_cleaning_char.p, test code is using faker to generate data to be tested but it would be better to change it as explicit example data.

Suggestion

same as above.
As it is hard to check what is going on while using faker, explicit data will be better.