Update app.py

fix broken links

app.py

@@ -21,13 +21,13 @@ intro.markdown(
     """Healthsea is an end-to-end spaCy v3 pipeline for analyzing user reviews to supplementary products and extracting their potential effects on health."""
 )
 intro.markdown(
-    """The code for Healthsea is provided in this [github repository](https://github.com/thomashacker/healthsea). Visit our [blog post](https://explosion.ai/) or more about the Healthsea project.
+    """The code for Healthsea is provided in this [github repository](https://github.com/explosion/healthsea). Visit our [blog post](https://explosion.ai/blog/healthsea) or more about the Healthsea project.
     """
 )
 
 st.write(
     """This app visualizes the individual processing steps of the pipeline in which you can write custom reviews to get insights into the functionality of all the different components.
-    You can visit the [Healthsea Demo app](https://huggingface.co/spaces/edichief/healthsea-demo) for exploring the Healthsea processing on productive data.
+    You can visit the [Healthsea Demo app](https://huggingface.co/spaces/spacy/healthsea-demo) for exploring the Healthsea processing on productive data.
     """ 
 )