improve color setting text and example

src/main/java/org/jastadd/tooling/RelAstGrammarColorSettingsPage.java

@@ -19,7 +19,7 @@ public class RelAstGrammarColorSettingsPage implements ColorSettingsPage {
     new AttributesDescriptor("Keyword", RelAstGrammarSyntaxHighlighter.KEYWORD),
     new AttributesDescriptor("Production Rule Symbol", RelAstGrammarSyntaxHighlighter.ASSIGN),
     new AttributesDescriptor("Relation Direction", RelAstGrammarSyntaxHighlighter.RELATON_DIR),
-    new AttributesDescriptor("Superclass Symbol", RelAstGrammarSyntaxHighlighter.COL),
+    new AttributesDescriptor("Superclass/Component Name", RelAstGrammarSyntaxHighlighter.COL),
     new AttributesDescriptor("Comma", RelAstGrammarSyntaxHighlighter.COMMA),
     new AttributesDescriptor("Documentation Comment", RelAstGrammarSyntaxHighlighter.DOCCOMMENT),
     new AttributesDescriptor("Namespace Qualifier Dot", RelAstGrammarSyntaxHighlighter.DOT),
@@ -50,7 +50,7 @@ public class RelAstGrammarColorSettingsPage implements ColorSettingsPage {
   @NotNull
   @Override
   public String getDemoText() {
-    return "Program ::= GrammarFile* <NameList:java.util.List<String>>;\n" +
+    return "Program ::= GrammarFile* <NameList:java.util.Map<String,String>>;\n" +
       "abstract Grammar ::= Declaration*; /* good rule! */\n" +
       "GrammarFile : Grammar ::= <FileName> ; // also good rule\n" +
       "/** the best rule */\n" +