Add style for command description in completer (#1126)

Author: gnodet

builtins/src/main/java/org/jline/builtins/Styles.java

@@ -35,7 +35,7 @@ public class Styles {
             "italic",
             "underline");
     private static final String DEFAULT_LS_COLORS = "di=1;91:ex=1;92:ln=1;96:fi=";
-    private static final String DEFAULT_HELP_COLORS = "ti=1;34:co=1:ar=3:op=33";
+    private static final String DEFAULT_HELP_COLORS = "ti=1;34:co=1:ar=3:op=33:de=";
     private static final String DEFAULT_PRNT_COLORS = "th=1;34:rn=1;34:rs=,~grey15:mk=1;34:em=31:vs=32";
     private static final String LS_COLORS = "LS_COLORS";
     private static final String HELP_COLORS = "HELP_COLORS";

console/src/main/java/org/jline/console/impl/SystemRegistryImpl.java

@@ -1446,7 +1446,7 @@ private void printCommandInfo(String command, String info, int max) {
         asb.append("\t");
         asb.append(command, HelpException.defaultStyle().resolve(".co"));
         asb.append("\t");
-        asb.append(info);
+        asb.append(info, HelpException.defaultStyle().resolve(".de"));
         asb.setLength(terminal().getWidth());
         asb.toAttributedString().println(terminal());
     }