Fix prefix for male bg_BG names (#2004)

The Bulgarian person provider used `prefix_female` instead of `prefix_male` within `formats_male`.

faker/providers/person/bg_BG/__init__.py

@@ -1759,7 +1759,7 @@ class Provider(PersonProvider):
 
     formats_male = (
         "{{first_name_male}} {{last_name_male}}",
-        "{{prefix_female}} {{first_name_male}} {{last_name_male}}",
+        "{{prefix_male}} {{first_name_male}} {{last_name_male}}",
     )
 
     formats = formats_male + formats_female