Minor improvements of comment generation

Change-Id: I3fa774a6ad6940a7e99e29e455aecf8c64ab0698
Signed-off-by: Adam Knapp <adam.knapp@sigmatechnology.se>

org.eclipse.titan.common/src/org/eclipse/titan/common/utils/CommentUtils.java

@@ -18,7 +18,7 @@ import java.text.MessageFormat;
 public final class CommentUtils {
 	private static final String HEADER_COMMENT_TEXT = 
 			  "{0}This Java file was generated by the TITAN Designer Eclipse plug-in version {1}\n"
-			+ "{0}for ({2}@{3})\n";
+			+ "{0}for ({2}@{3})";
 	public static final String COPYRIGHT_TEXT = "Copyright (c) 2000-2021 Ericsson Telecom AB";
 	public static final String DO_NOT_EDIT_TEXT = "Do not edit this file unless you know what you are doing!";
 
@@ -62,7 +62,7 @@ public final class CommentUtils {
 	 * @return The header comment 
 	 */
 	public static String getHeaderCommentsWithCopyright(final String commentString, final String versionString) {
-		return getHeaderComments(commentString, versionString) + commentString + COPYRIGHT_TEXT + "\n\n";
+		return getHeaderComments(commentString, versionString) + "\n" + commentString + COPYRIGHT_TEXT + "\n\n";
 	}
 
 	/**
@@ -73,6 +73,6 @@ public final class CommentUtils {
 	 * @return The header comment 
 	 */
 	public static String getHeaderCommentsWithCopyrightAndDoNotEdit(final String commentString, final String versionString) {
-		return getHeaderCommentsWithCopyright(commentString, versionString) + commentString + DO_NOT_EDIT_TEXT + "\n";
+		return getHeaderCommentsWithCopyright(commentString, versionString) + "\n" + commentString + DO_NOT_EDIT_TEXT + "\n";
 	}
 }