lang: core: iter: Misc formatting fixes

Also fix up the examples.

examples/lang/map-iterator0.mcl

@@ -10,4 +10,4 @@ $out1 = iter.map($in1, $fn)
 
 $t1 = template("out1: {{ . }}", $out1)
 
-test $t1 {}
+test [$t1,] {}

examples/lang/map-iterator1.mcl

@@ -25,4 +25,4 @@ $out1 = iter.map($in1, $fn)
 
 $t1 = template("out1: {{ . }}", $out1)
 
-test $t1 {}
+test [$t1,] {}

examples/lang/map-iterator2.mcl

@@ -37,7 +37,7 @@ $out1 = iter.map($in1, $fn)
 
 $t1 = template("out1: {{ . }}", $out1)
 
-test $t1 {}
+test [$t1,] {}
 
 file "/tmp/mgmt/map" {
 	state => $const.res.file.state.exists,

lang/core/iter/map_func.go

@@ -343,7 +343,8 @@ func (obj *MapFunc) Stream(ctx context.Context) error {
 
 func (obj *MapFunc) replaceSubGraph(subgraphInput interfaces.Func) error {
 	// Create a subgraph which splits the input list into 'n' nodes, applies
-	// 'newFuncValue' to each, then combines the 'n' outputs back into a list.
+	// 'newFuncValue' to each, then combines the 'n' outputs back into a
+	// list.
 	//
 	// Here is what the subgraph looks like:
 	//
@@ -356,9 +357,9 @@ func (obj *MapFunc) replaceSubGraph(subgraphInput interfaces.Func) error {
 	//	"inputElemFunc1" -> "outputElemFunc1"
 	//	"inputElemFunc2" -> "outputElemFunc2"
 	//
-	//   "outputElemFunc0" -> "outputListFunc"
-	//   "outputElemFunc1" -> "outputListFunc"
-	//   "outputElemFunc1" -> "outputListFunc"
+	//	"outputElem0" -> "outputListFunc"
+	//	"outputElem1" -> "outputListFunc"
+	//	"outputElem2" -> "outputListFunc"
 	//
 	//	"outputListFunc" -> "subgraphOutput"
 	// }