correct target features in hash_calc

[folkertdev]

Benchmark 1 (57 runs): ./target/release/examples/baseline 1 rs silesia-small.tar
  measurement          mean ± σ            min … max           outliers         delta
  wall_time          87.6ms ±  945us    86.0ms … 91.1ms          3 ( 5%)        0%
  peak_rss           26.6MB ± 61.5KB    26.5MB … 26.6MB          0 ( 0%)        0%
  cpu_cycles          330M  ± 2.86M      323M  …  341M           3 ( 5%)        0%
  instructions        776M  ±  249       776M  …  776M           0 ( 0%)        0%
  cache_references   19.9M  ±  188K     19.6M  … 20.5M           3 ( 5%)        0%
  cache_misses        478K  ± 96.6K      362K  …  828K           5 ( 9%)        0%
  branch_misses      3.06M  ± 1.21K     3.06M  … 3.07M           1 ( 2%)        0%
Benchmark 2 (58 runs): ./target/release/examples/blogpost-compress 1 rs silesia-small.tar
  measurement          mean ± σ            min … max           outliers         delta
  wall_time          86.7ms ±  915us    85.0ms … 91.4ms          4 ( 7%)          -  1.0% ±  0.4%
  peak_rss           26.5MB ± 65.8KB    26.5MB … 26.6MB          0 ( 0%)          -  0.1% ±  0.1%
  cpu_cycles          326M  ± 3.53M      320M  …  340M           5 ( 9%)          -  1.1% ±  0.4%
  instructions        718M  ±  288       718M  …  718M           0 ( 0%)        ⚡-  7.4% ±  0.0%
  cache_references   19.8M  ±  191K     19.5M  … 20.4M           5 ( 9%)          -  0.2% ±  0.4%
  cache_misses        434K  ±  105K      323K  …  968K           6 (10%)        ⚡-  9.1% ±  7.8%
  branch_misses      3.07M  ± 18.1K     3.05M  … 3.10M           0 ( 0%)          +  0.0% ±  0.2%