Update app.py

app.py

@@ -38,7 +38,7 @@ with col:
     st.markdown("Cavity Detection Tool (CADET) is a machine learning pipeline trained to detect X-ray cavities from noisy Chandra images of early-type galaxies.")
     st.markdown("To use this tool: upload your image, select the scale of interest, and make a prediction!")
     st.markdown("If you use this tool for your research, please cite [Plšek et al. 2023](https://arxiv.org/abs/2304.05457)")
-    st.markdown("Input images should be centered at the centre of the galaxy and point sources should be filled with surrounding background ([dmfilth](https://cxc.cfa.harvard.edu/ciao/ahelp/dmfilth.html)).")
+    st.markdown("Input images should be centred at the centre of the galaxy and point sources should be filled with surrounding background ([dmfilth](https://cxc.cfa.harvard.edu/ciao/ahelp/dmfilth.html)).")
     
     # Create file uploader widget
     uploaded_file = st.file_uploader("Choose a FITS file", type=['fits'])