Clarify that input must be sorted

kgryte · kgryte · commit c2aad25b36a8 · 2016-10-18T00:28:25.000-07:00
diff --git a/tools/awk/median.awk b/tools/awk/median.awk
@@ -5,7 +5,7 @@
 # Usage: median
 #
 # Input:
-#   - a column of numbers
+#   - a sorted column of numbers
 #
 # Output:
 #   - median value
