Install 'pecoff_o' module in correct place

xtldr2/modules/pecoff_o/CMakeLists.txt

@@ -18,7 +18,7 @@ target_link_libraries(pecoff_o libxtos libxtldr)
 
 # Set proper binary name and install target
 set_target_properties(pecoff_o PROPERTIES SUFFIX .efi)
-set_install_target(pecoff_o efi/boot/xtldr)
+set_install_target(pecoff_o efi/boot/xtldr/modules)
 
 # Set module entrypoint and subsystem
 set_entrypoint(pecoff_o "XtLdrModuleMain")