A two-part documentary about Wendy Williams was released over the weekend, and the footage was shocking to see.Just before the premiere, it was revealed that Williams was diagnosed with “primary progressive aphasia and frontotemporal dementia (FTD),” and now producers are admitting that if they had known she was suffering from the disease, they never would have done the documentary.Producer Mark Ford, executive producer Erica Hanson and Brie Miranda Bryant, an executive at Lifetime, spoke to The Hollywood Reporter about the difficult experience of filming Williams as she clearly…