Fix a typo. (#2826)

Author: Can Guler

benchmark/benchmain/main.go

@@ -533,7 +533,7 @@ func (b *benchOpts) generateFeatures(featuresNum []int) []stats.Features {
 // curPos and initialPos are two slices where each value acts as an index
 // into the appropriate feature slice maintained in benchOpts.features. This
 // loop generates all possible combinations of features by changing one value
-// at a time, and once curPos becomes equal to intialPos, we have explored
+// at a time, and once curPos becomes equal to initialPos, we have explored
 // all options.
 var result []stats.Features
 var curPos []int