SLING-12077: fix javadoc errors (#3)

diff --git a/src/main/java/org/apache/sling/adapter/Adaption.java b/src/main/java/org/apache/sling/adapter/Adaption.java
index 8890e14..6cc7f40 100644
--- a/src/main/java/org/apache/sling/adapter/Adaption.java
+++ b/src/main/java/org/apache/sling/adapter/Adaption.java
@@ -19,12 +19,12 @@
 package org.apache.sling.adapter;
 
 /**
- * The <tt>Adaption</tt> is a marker interface which is registered as a service by the <tt>AdapterManager</tt> once a
- * certain <tt>AdapterFactory</tt> is available
+ * The <pre>Adaption</pre> is a marker interface which is registered as a service by the <pre>AdapterManager</pre> once a
+ * certain <pre>AdapterFactory</pre> is available
  * 
  * <p>
  * Its intended use is to make it simple for declarative service components to wait for a certain
- * <tt>AdapterFactory</tt> to be available
+ * <pre>AdapterFactory</pre> to be available
  * 
  * <p>
  * A usage sample is
diff --git a/src/main/java/org/apache/sling/adapter/internal/AdaptionImpl.java b/src/main/java/org/apache/sling/adapter/internal/AdaptionImpl.java
index b968043..b47d6c7 100644
--- a/src/main/java/org/apache/sling/adapter/internal/AdaptionImpl.java
+++ b/src/main/java/org/apache/sling/adapter/internal/AdaptionImpl.java
@@ -21,7 +21,7 @@
 import org.apache.sling.adapter.Adaption;
 
 /**
- * The <tt>AdaptionImpl</tt> is a default, empty, implementation of the <tt>Adaption</tt> interface
+ * The <pre>AdaptionImpl</pre> is a default, empty, implementation of the <pre>Adaption</pre> interface
  *
  */
 public enum AdaptionImpl implements Adaption {