Update RootMacros.cmake

Forgot to change the second line

Author: rtlprmft

cmake/modules/RootMacros.cmake

@@ -660,7 +660,7 @@ function(ROOT_GENERATE_DICTIONARY dictionary)
       ${incdirs} $<TARGET_PROPERTY:${ARG_MODULE},INCLUDE_DIRECTORIES>)
   else()
     get_filename_component(dictionary_name ${dictionary} NAME)   
-    add_custom_target(${dictionary} DEPENDS ${dictionary}.cxx ${pcm_name} ${rootmap_name} ${cpp_module_file})
+    add_custom_target(${dictionary_name} DEPENDS ${dictionary}.cxx ${pcm_name} ${rootmap_name} ${cpp_module_file})
   endif()
 
   if(PROJECT_NAME STREQUAL "ROOT")