doc: sample: add comma separators between complex-msg args

doc/sample/Expressions.im

@@ -2,11 +2,11 @@ y = 1 + 2 * 3 / 4 * 5 - 6 + 7 multiplyBy:2.
 z = w = 2 + 3 multiplyBy:2.
 x = (((1 + 2 * 3) multiplyBy:3) add: 5) + 2.
 x = ((1 + 2 * 3) multiplyBy:3).
-p = 5 multiply(by:3 add:(2 + 1)).
+p = 5 multiply(by:3, add:(2 + 1)).
 q = 10 squared squared.
 
 p1
-    setAge:2 squared squared + 4 squared multiply(by:2 add:4 + 1 * 3)
+    setAge:2 squared squared + 4 squared multiply(by:2, add:4 + 1 * 3)
     in:"mon" + "ths".
 
 m = xz multiply(by:3 add:2) squared.
@@ -19,7 +19,7 @@ x = OrderedCollection new
 	add: 6;
 	yourself.
 
-age = Person new(name:"John Doe" age:34)
+age = Person new(name:"John Doe", age:34)
     setAge:144 inUnit:"months";
     ageInMonths.
 
@@ -27,7 +27,7 @@ x = 5.
 q = 10 if x > 2 else 20.
 q = if x > 2 then 10 else 20 end.
 
-cout put:5 multiply(by:5 add:2) if x > 2.
+cout put:5 multiply(by:5, add:2) if x > 2.
 
 if x > 2 then
 	cout put:"Greater"

doc/sample/Simple.im

@@ -1,2 +1,36 @@
-z = 32.
+y = 1 + 2 * 3 / 4 * 5 - 6 + 7 multiplyBy:2.
-cout put:"iteration" while z > 0
+z = w = 2 + 3 multiplyBy:2.
+x = (((1 + 2 * 3) multiplyBy:3) add: 5) + 2.
+x = ((1 + 2 * 3) multiplyBy:3).
+p = 5 multiply(by:3, add:(2 + 1)).
+q = 10 squared squared.
+
+p1
+    setAge:2 squared squared + 4 squared multiply(by:2, add:4 + 1 * 3)
+    in:"mon" + "ths".
+
+m = xz multiply(by:3 add:2) squared.
+
+m = xz multiply(by:3 add:2); squared.
+
+x = OrderedCollection new
+	add: 2;
+	add: 4;
+	add: 6;
+	yourself.
+
+age = Person new(name:"John Doe", age:34)
+    setAge:144 inUnit:"months";
+    ageInMonths.
+
+x = 5.
+q = 10 if x > 2 else 20.
+q = if x > 2 then 10 else 20 end.
+
+cout put:5 multiply(by:5, add:2) if x > 2.
+
+if x > 2 then
+	cout put:"Greater"
+else
+	cout put:"Less"
+end