[nit] Fix typo in properties.h

Test: none
Change-Id: I6fe25bc9404c18bedc5802b3d830ede8a1bc28df
diff --git a/base/include/android-base/properties.h b/base/include/android-base/properties.h
index 95d1b6a..4d7082a 100644
--- a/base/include/android-base/properties.h
+++ b/base/include/android-base/properties.h
@@ -61,4 +61,4 @@
 } // namespace base
 } // namespace android
 
-#endif  // ANDROID_BASE_MEMORY_H
+#endif  // ANDROID_BASE_PROPERTIES_H