Minor misc. updates (#353)

* clarified doc comments.
* corrected typos in comments
* update test sample `mandel.kls` to include comments added to the sample assembly

Author: smaillet

src/Samples/Kaleidoscope/.editorconfig

@@ -4,7 +4,7 @@ vsspell_section_id = 1566b770c5af48b08aa5b43b10ffef28
 vsspell_ignored_words_1566b770c5af48b08aa5b43b10ffef28 = File:IgnoredWords.dic|def
 
 [*.kls]
-# VSSPELL: DIsable everything for the sample languages
+# VSSPELL: Disable everything for the sample languages
 vsspell_section_id = 257c51e4a39d462090397bebd5922176
 vsspell_spell_check_as_you_type = false
 vsspell_include_in_project_spell_check = false

src/Samples/Kaleidoscope/Kaleidoscope.Grammar/KaleidoscopeUserOperatorListener.cs

@@ -19,8 +19,9 @@ public KaleidoscopeUserOperatorListener( DynamicRuntimeState state )
         /// <summary>Handles successfully parsed function definitions</summary>
         /// <param name="context">Context parse node for the parsed function</param>
         /// <remarks>
-        /// Upon successful parse of a function definition this check if it is a user defined operator
-        /// and updates the RuntimeState accordingly, if it is.
+        /// Upon successful parse of a function definition this checks if it is a user defined operator
+        /// and updates the RuntimeState accordingly, if it is. This is used for support of user defined
+        /// operators providing user defined precedence.
         /// </remarks>
         public override void ExitFunctionDefinition( KaleidoscopeParser.FunctionDefinitionContext context )
         {

src/Samples/Kaleidoscope/mandel.kls

@@ -1,15 +1,19 @@
+# unary operator to perform a logical NOT
 def unary!(v)
   if v then
     0
   else
     1;
 
+# unary operator to perform a mathematical negation
 def unary-(v)
   0-v;
 
+# Comparison operator
 def binary> 10 (LHS RHS)
   RHS < LHS;
 
+# Logical OR operator
 def binary| 5 (LHS RHS)
   if LHS then
     1
@@ -18,17 +22,21 @@ def binary| 5 (LHS RHS)
   else
     0;
 
+# Logical AND operator
 def binary& 6 (LHS RHS)
   if !LHS then
     0
   else
     !!RHS;
 
+# arithmatic equality test
 def binary== 9 (LHS RHS)
   !(LHS < RHS | LHS > RHS);
 
+# selector operator
 def binary : 1 (x y) y;
 
+# declare access to built-in function
 extern putchard(char);
 
 def printdensity(d)