Add license_note am: ecf968d060 am: 01218489cf am: 525fa7d036

Original change: https://android-review.googlesource.com/c/platform/external/google-fonts/karla/+/2012162

Change-Id: I6f247e34efce859216ca7aa7d45f074e37daeb6e
diff --git a/METADATA b/METADATA
index 36b36c7..1b0c1f8 100644
--- a/METADATA
+++ b/METADATA
@@ -1,3 +1,6 @@
+# *** THIS PACKAGE HAS SPECIAL LICENSING CONDITIONS.  PLEASE
+#     CONSULT THE OWNERS AND opensource-licensing@google.com BEFORE
+#     DEPENDING ON IT IN YOUR PROJECT. ***
 name: "Karla"
 description:
     ""
@@ -9,5 +12,6 @@
   }
   version: "99a8b4de96765ac7c9bba79b676d5663174d65de"
   last_upgrade_date { year: 2020 month: 3 day: 4 }
+  license_note: "contains OFL fonts"
   license_type: BY_EXCEPTION_ONLY
-}
\ No newline at end of file
+}