update interceptor documentation (#2173)

Co-authored-by: Tobias Polley <polley@predic8.de>

Author: russelmrcl

core/src/main/java/com/predic8/membrane/core/interceptor/beautifier/BeautifierInterceptor.java

@@ -28,7 +28,7 @@
 import static com.predic8.membrane.core.interceptor.Outcome.*;
 
 /**
- * @description Beautifies request and response bodies. Supported are the Formats: JSON, JSON5, XML, TEXT
+ * @description Beautifies request and response bodies. Supported are the Formats: <b>JSON</b>, <b>JSON5</b>, <b>XML</b>, <b>TEXT</b>
  * @topic 2. Enterprise Integration Patterns
  */
 @MCElement(name = "beautifier")

core/src/main/java/com/predic8/membrane/core/interceptor/flow/IfInterceptor.java

@@ -32,9 +32,8 @@
  * if allows conditional execution of nested interceptors.
  * </p>
  * <pre><code><if test="method == 'POST'" language="SpEL">
- *     ...
- * </if>
- * </code></pre>
+ *         ...
+ * </if></code></pre>
  * @topic 1. Proxies and Flow
  */
 @MCElement(name = "if")