Update doc [ci skip]

mrkn · mrkn · commit de915c97f492 · 2018-02-16T11:51:09.000+09:00
diff --git a/ext/enumerable/statistics/extension/statistics.c b/ext/enumerable/statistics/extension/statistics.c
@@ -1545,7 +1545,8 @@ enum_sample_multiple_unweighted(VALUE obj, long size, VALUE random, int replace_
  * Choose a random element or +n+ random elements from the enumerable.
  *
  * The enumerable is completely scanned just once for choosing random elements
- * even if +n+ is ommitted or +n+ is +1+.
+ * even if +n+ is ommitted or +n+ is +1+.  This means this method cannot be
+ * applicable to an infinite enumerable.
  *
  * +replace:+ keyword specifies whether the sample is with or without
  * replacement.

Original file line number	Diff line number	Diff line change
`@@ -1545,7 +1545,8 @@ enum_sample_multiple_unweighted(VALUE obj, long size, VALUE random, int replace_`
`1545`	`1545`	`* Choose a random element or +n+ random elements from the enumerable.`
`1546`	`1546`	`*`
`1547`	`1547`	`* The enumerable is completely scanned just once for choosing random elements`
`1548`		`- * even if +n+ is ommitted or +n+ is +1+.`
	`1548`	`+ * even if +n+ is ommitted or +n+ is +1+. This means this method cannot be`
	`1549`	`+ * applicable to an infinite enumerable.`
`1549`	`1550`	`*`
`1550`	`1551`	`* +replace:+ keyword specifies whether the sample is with or without`
`1551`	`1552`	`* replacement.`