fix javadoc warnings

src/core/lombok/ConfigurationKeys.java

@@ -42,7 +42,7 @@ public class ConfigurationKeys {
 	 * lombok configuration: {@code lombok.addGeneratedAnnotation} = {@code true} | {@code false}.
 	 * 
 	 * If {@code true}, lombok generates {@code @javax.annotation.Generated("lombok")} on all fields, methods, and types that are generated, unless {@code lombok.addJavaxGeneratedAnnotation} is set.
-	 * <br />
+	 * <br>
 	 * <em>BREAKING CHANGE</em>: Starting with lombok v2.0.0, defaults to {@code false} instead of {@code true}, as this annotation is broken in JDK9.
 	 * 
 	 * @see ConfigurationKeys#ADD_JAVAX_GENERATED_ANNOTATIONS
@@ -56,7 +56,7 @@ public class ConfigurationKeys {
 	 * lombok configuration: {@code lombok.addJavaxGeneratedAnnotation} = {@code true} | {@code false}.
 	 * 
 	 * If {@code true}, lombok generates {@code @javax.annotation.Generated("lombok")} on all fields, methods, and types that are generated.
-	 * <br />
+	 * <br>
 	 * <em>BREAKING CHANGE</em>: Starting with lombok v2.0.0, defaults to {@code false} instead of {@code true}, as this annotation is broken in JDK9.
 	 */
 	public static final ConfigurationKey<Boolean> ADD_JAVAX_GENERATED_ANNOTATIONS = new ConfigurationKey<Boolean>("lombok.addJavaxGeneratedAnnotation", "Generate @javax.annotation.Generated on all generated code (default: follow lombok.addGeneratedAnnotation).") {};
@@ -94,7 +94,7 @@ public class ConfigurationKeys {
 	 * 
 	 * NB: GWT projects, and probably android projects, should explicitly set this key to {@code true} for the entire project.
 	 * 
-	 * <br />
+	 * <br>
 	 * <em>BREAKING CHANGE</em>: Starting with lombok v2.0.0, defaults to {@code false} instead of {@code true}, as {@code @ConstructorProperties} requires extra modules in JDK9.
 	 * 
 	 * @see ConfigurationKeys#ANY_CONSTRUCTOR_ADD_CONSTRUCTOR_PROPERTIES