Fixes issue #1789 - picking another workspace duplicates the ‘lombok is installed’ text in the eclipse about dialog.

src/eclipseAgent/lombok/eclipse/agent/PatchFixesShadowLoaded.java

@@ -32,6 +32,7 @@ import lombok.core.Version;
 public class PatchFixesShadowLoaded {
 	public static String addLombokNotesToEclipseAboutDialog(String origReturnValue, String key) {
 		if ("aboutText".equals(key)) {
+			if (origReturnValue.contains(" is installed. https://projectlombok.org")) return origReturnValue;
 			return origReturnValue + "\n\nLombok " + Version.getFullVersion() + " is installed. https://projectlombok.org/";
 		}
 		return origReturnValue;