Update README.md

Fix adding known tokens to knowns.

README.md

@@ -104,7 +104,7 @@ def filter_text(DE_TEXT: str, bloom_filter: BloomFilter):
     for token in tokens:
         if token in bloom_filter:
             print(f"'{token}' is in the bloom filter.")
-
+            knowns.add(token)
         else:
             print(f"'{token}' is NOT in the bloom filter.")
             unknowns.add(token)