Update app.py

app.py

@@ -253,8 +253,8 @@ st.markdown("""
     - $g$ represents the generation technology (solar, onshore wind, offshore wind, river),
     - ${Cost}_{g}$ is the per-MW cost of technology $g$,
     - $Capacity_{r, g}$ is the installed capacity of technology $g$ in region $r$,
-    - ${Battery/, Cost}$ represents the cost per MWh of battery storage,
-    - ${Battery/, Capacity}$ is the total installed battery capacity.
+    - ${Battery\, Cost}$ represents the cost per MWh of battery storage,
+    - ${Battery\, Capacity}$ is the total installed battery capacity.
     """)
 
 st.markdown("""