Merge pull request #6804 from VesnaT/dist_spearman

[FIX] Distances: Spearman actually computes Spearman instead of Pearson

Author: lanzagar

Orange/widgets/unsupervised/owdistances.py

@@ -57,8 +57,8 @@ class MetricDef(NamedTuple):
                   "Absolute value of Pearson correlation; distance = 1 - |ρ|",
                   distance.PearsonRAbsolute),
         MetricDef(Spearman, "Spearman",
-                  "Pearson correlation; distance = 1 - ρ/2",
-                  distance.PearsonR),
+                  "Spearman correlation; distance = 1 - ρ/2",
+                  distance.SpearmanR),
         MetricDef(SpearmanAbsolute, "Spearman (absolute)",
                   "Absolute value of Pearson correlation; distance = 1 - |ρ|",
                   distance.SpearmanRAbsolute),