Update app.py

app.py

@@ -11,7 +11,7 @@ with gr.Blocks(theme='Nymbo/Nymbo_Theme') as demo:
             gr.Markdown(
                 """
                 # Theme preview: `Nymbo_Theme`
-                To use this theme, set `theme='ehristoforu/MONO_Theme'` in `gr.Blocks()` or `gr.Interface()`.
+                To use this theme, set `theme='Nymbo/Nymbo_Theme'` in `gr.Blocks()` or `gr.Interface()`.
                 You can append an `@` and a semantic version expression, e.g. @>=1.0.0,<2.0.0 to pin to a given version
                 of this theme.
                 """