fix wording

Author: ndyakov

doctests/sets_example_test.go

@@ -216,8 +216,9 @@ func ExampleClient_saddsmembers() {
 		panic(err)
 	}
 
-	// Sort the strings in the slice to make sure the output is alphabetical 
+	// Sort the strings in the slice to make sure the output is lexicographical 
 	sort.Strings(res10)
+
 	fmt.Println(res10) // >>> [bike:1 bike:2 bike:3]
 	// STEP_END
 
@@ -298,7 +299,7 @@ func ExampleClient_sdiff() {
 	}
 
 
-	// Sort the strings in the slice to make sure the output is alphabetical 
+	// Sort the strings in the slice to make sure the output is lexicographical 
 	sort.Strings(res13)
 
 	fmt.Println(res13) // >>> [bike:2 bike:3]
@@ -356,7 +357,7 @@ func ExampleClient_multisets() {
 		panic(err)
 	}
 
-	// Sort the strings in the slice to make sure the output is alphabetical 
+	// Sort the strings in the slice to make sure the output is lexicographical 
 	sort.Strings(res15)
 
 	fmt.Println(res15) // >>> [bike:1 bike:2 bike:3 bike:4]
@@ -383,7 +384,7 @@ func ExampleClient_multisets() {
 		panic(err)
 	}
 
-	// Sort the strings in the slice to make sure the output is alphabetical 
+	// Sort the strings in the slice to make sure the output is lexicographical 
 	sort.Strings(res18)
 
 	fmt.Println(res18) // >>> [bike:2 bike:3]