fix: make linter happy

Signed-off-by: Oleg S <97077423+RobotSail@users.noreply.github.com>

Author: RobotSail

src/instructlab/training/config.py

@@ -30,8 +30,8 @@ class DeepSpeedOffloadStrategy(Enum):
 
 # public API
 class DistributedBackend(Enum):
-    FSDP: str = "fsdp"
-    DEEPSPEED: str = "deepspeed"
+    FSDP = "fsdp"
+    DEEPSPEED = "deepspeed"
 
 
 # public API
@@ -121,6 +121,7 @@ class DeepSpeedOptions(BaseModel):
     save_samples: int | None = None
 
 
+# public API
 class DistillationConfig(BaseModel):
     """
     Config to use when performing knowledge distillation during training.