Add link to 3rd party NOTICE contents
@@ -6,7 +6,10 @@ The Apache Software Foundation (http://www.apache.org/).
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-This product contains a modified version of boilerpipe:
+This product contains a modified version of boilerpipe
+(NOTICE contents taken from https://github.com/kohlschutter/boilerpipe/blob/master/NOTICE):
+
+---
boilerpipe
