Cycles: OSL Camera: Use title case for parameters in the UI

This is an alternate solution to !146889 to improve labels in the
camera UI, while being much less invasive. It doesn't take custom
labels into account, but it simply uses the parameter names with title
case.

Pull Request: https://projects.blender.org/blender/blender/pulls/148141

intern/cycles/blender/addon/ui.py

@@ -1210,7 +1210,7 @@ class CYCLES_CAMERA_PT_lens_custom_parameters(CyclesButtonsPanel, Panel):
 
         col = layout.column()
         for key in ccam.keys():
-            col.prop(ccam, f'["{key}"]')
+            col.prop(ccam, f'["{key}"]', text=bpy.path.display_name(key))
 
 
 class CYCLES_PT_context_material(CyclesButtonsPanel, Panel):