fixed default value "more then one character" limitation

Author: hhund

dsf-maven/dsf-maven-plugin/src/main/java/dev/dsf/maven/config/ConfigDocGenerator.java

@@ -393,7 +393,7 @@ private Function<Field, DocumentationEntry> dsfDocumentationGenerator()
 					getString(documentation, "recommendation"));
 			String example = getDocumentationStringMonospace("Example", getString(documentation, "example"));
 
-			String defaultValueString = devalueValue != null && devalueValue.length() > 1
+			String defaultValueString = devalueValue != null && !devalueValue.isBlank()
 					&& !"#{null}".equals(devalueValue) ? getDocumentationStringMonospace("Default", devalueValue) : "";
 
 			return new DocumentationEntry(propertyName,