provider: fix slug

src/provider/hfdialogpt.py

@@ -8,7 +8,7 @@ from gi.repository import Gtk, Adw, GLib
 
 class HuggingFaceDialoGPTLargeProvider(BaseHFProvider):
     name = "DialoGPT"
-    slug = "dialogpt"
+    slug = "hfdialogpt"
     model = "microsoft/DialoGPT-large"
 
     @property

src/provider/hfgpt2.py

@@ -3,7 +3,7 @@ from .huggingface import BaseHFProvider
 
 class HuggingFaceGPT2Provider(BaseHFProvider):
     name = "GPT 2"
-    slug = "gpt2"
+    slug = "hfgpt2"
     model = "gpt2"
 
     @property