Bug 543933 - Build javadocs with Java 11

Fix warnings catched by java 11 javadoc.

Change-Id: I9e35131d8314575d81c186d5c418b6be5137d46c
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
diff --git a/org.eclipse.core.filebuffers/src/org/eclipse/core/filebuffers/IDocumentSetupParticipant.java b/org.eclipse.core.filebuffers/src/org/eclipse/core/filebuffers/IDocumentSetupParticipant.java
index 290a366..1185e15 100644
--- a/org.eclipse.core.filebuffers/src/org/eclipse/core/filebuffers/IDocumentSetupParticipant.java
+++ b/org.eclipse.core.filebuffers/src/org/eclipse/core/filebuffers/IDocumentSetupParticipant.java
@@ -33,10 +33,11 @@
  * In order to provide backward compatibility for clients of <code>IDocumentSetupParticipant</code>, extension
  * interfaces are used to provide a means of evolution. The following extension interfaces
  * exist:
+ * </p>
  * <ul>
  * <li> {@link IDocumentSetupParticipantExtension} since version 3.4 introducing the
  *      concept of rewrite sessions. .</li>
- * </ul></p>
+ * </ul>
  *
  * @since 3.0
  * @see org.eclipse.jface.text.IDocumentExtension3
diff --git a/org.eclipse.search/new search/org/eclipse/search/ui/text/TextSearchQueryProvider.java b/org.eclipse.search/new search/org/eclipse/search/ui/text/TextSearchQueryProvider.java
index 2be8efc..a58695c 100644
--- a/org.eclipse.search/new search/org/eclipse/search/ui/text/TextSearchQueryProvider.java
+++ b/org.eclipse.search/new search/org/eclipse/search/ui/text/TextSearchQueryProvider.java
@@ -25,9 +25,11 @@
 
 
 /**
- * Abstract base class for text search query providers supplied via the <code>org.eclipse.search.textSearchQueryProvider</code>
- * extension point. The plug-in preference <code>org.eclipse.search.textSearchQueryProvider<code> defines the preferred
- * query provider. It is intended that only products choose a preferred query provider.
+ * Abstract base class for text search query providers supplied via the
+ * <code>org.eclipse.search.textSearchQueryProvider</code> extension point. The
+ * plug-in preference <code>org.eclipse.search.textSearchQueryProvider</code>
+ * defines the preferred query provider. It is intended that only products
+ * choose a preferred query provider.
  *
  * @since 3.2
  */
diff --git a/org.eclipse.text/src/org/eclipse/text/edits/TextEdit.java b/org.eclipse.text/src/org/eclipse/text/edits/TextEdit.java
index bbe53e0..2099acc 100644
--- a/org.eclipse.text/src/org/eclipse/text/edits/TextEdit.java
+++ b/org.eclipse.text/src/org/eclipse/text/edits/TextEdit.java
@@ -39,11 +39,13 @@
  * </p>
  * <p>
  * An edit tree is well formed in the following sense:
+ * </p>
  * <ul>
  *   <li>a parent edit covers all its children</li>
  *   <li>children don't overlap</li>
  *   <li>an edit with length 0 can't have any children</li>
  * </ul>
+ * <p>
  * Any manipulation of the tree that violates one of the above requirements results
  * in a <code>MalformedTreeException</code>.
  * </p>
@@ -51,6 +53,7 @@
  * Insert edits are represented by an edit of length 0. If more than one insert
  * edit exists at the same offset then the edits are executed in the order in which
  * they have been added to a parent. The following code example:
+ * </p>
  * <pre>
  *    IDocument document= new Document("org");
  * 	  MultiTextEdit edit= new MultiTextEdit();
@@ -58,6 +61,7 @@
  *    edit.addChild(new InsertEdit(0, "eclipse."));
  *    edit.apply(document);
  * </pre>
+ * <p>
  * therefore results in string: "www.eclipse.org".
  * </p>
  * <p>
diff --git a/org.eclipse.text/src/org/eclipse/text/edits/UndoEdit.java b/org.eclipse.text/src/org/eclipse/text/edits/UndoEdit.java
index bb0f523..b12bd1f 100644
--- a/org.eclipse.text/src/org/eclipse/text/edits/UndoEdit.java
+++ b/org.eclipse.text/src/org/eclipse/text/edits/UndoEdit.java
@@ -27,7 +27,8 @@
  * <p>
  * Clients can't add additional children to an undo edit nor can they
  * add an undo edit as a child to another edit. Doing so results in
- * both cases in a <code>MalformedTreeException<code>.
+ * both cases in a <code>MalformedTreeException</code>.
+ * </p>
  *
  * @since 3.0
  * @noinstantiate This class is not intended to be instantiated by clients.
diff --git a/org.eclipse.text/src/org/eclipse/text/undo/DocumentUndoManager.java b/org.eclipse.text/src/org/eclipse/text/undo/DocumentUndoManager.java
index db7d7f7..57e3f92 100644
--- a/org.eclipse.text/src/org/eclipse/text/undo/DocumentUndoManager.java
+++ b/org.eclipse.text/src/org/eclipse/text/undo/DocumentUndoManager.java
@@ -52,7 +52,7 @@
  * <p>
  * The classes representing individual text edits (formerly text commands)
  * were promoted from inner types to their own classes in order to support
- * reassignment to a different undo manager.<p>
+ * reassignment to a different undo manager.</p>
  * <p>
  * This class is not intended to be subclassed.
  * </p>