Update identify/extensions.py

Co-authored-by: Thaddeus Crews <repiteo@outlook.com>

Author: seanbudd

identify/extensions.py

@@ -411,8 +411,9 @@
     'Rakefile': EXTENSIONS['rb'],
     'rebar.config': EXTENSIONS['erl'],
     'setup.cfg': EXTENSIONS['ini'],
-    'sconstruct': {'text', 'scons'},
-    'sconscript': {'text', 'scons'},
+    'SConstruct': {'text', 'scons'},
+    'SConscript': {'text', 'scons'},
+    'SCsub': {'text', 'scons'},
     'sys.config': EXTENSIONS['erl'],
     'sys.config.src': EXTENSIONS['erl'],
     'Tiltfile': {'text', 'tiltfile'},