Update Xor binary fuse filter description in README

Corrected the bit variants for the Xor binary fuse filter and clarified space requirements.

Author: lemire

README.md

@@ -6,7 +6,7 @@ The following filter types are currently implemented:
 
 * Xor filter: 8 and 16 bit variants; needs less space than cuckoo filters, with faster lookup
 * Xor+ filter: 8 and 16 bit variants; compressed xor filter
-* Xor binary fuse filter: 8 and 32 bit variants; needs less space than xor filters, with faster lookup
+* Xor binary fuse filter: 8. 16 and 32 bit variants; needs less space than xor filters (for large filters), with faster lookup
 * Cuckoo filter: 8 and 16 bit variants; uses cuckoo hashing to store fingerprints
 * Cuckoo+ filter: 8 and 16 bit variants, need a bit less space than regular cuckoo filters
 * Bloom filter: the 'standard' algorithm