Fixed outdated javadoc text in @Data annotation.

src/core/lombok/Data.java

@@ -30,7 +30,7 @@ import java.lang.annotation.Target;
  * Generates getters for all fields, a useful toString method, and hashCode and equals implementations that check
  * all non-transient fields. Will also generate setters for all non-final fields, as well as a constructor.
  * <p>
- * If any method to be generated already exists (in name - the return type or parameters are not relevant), then
+ * If any method to be generated already exists (in name and parameter count - the return type or parameter types are not relevant), then
  * that method will not be generated by the Data annotation.
  * <p>
  * The generated constructor will have 1 parameter for each final field. The generated toString will print all fields,