Update app/materials_library.py

app/materials_library.py

@@ -328,7 +328,7 @@ def display_materials_tab(material_library: MaterialLibrary):
             cols[2].write("**U-Value (W/m²·K)**")
             cols[3].write("**Preview**")
             cols[4].write("**Clone**")
-            for material in library acque:
+            for material in library_materials:
                 cols = st.columns([2, 1, 1, 1, 1])
                 cols[0].write(material.name)
                 cols[1].write(material.get_thermal_mass())