Fix missing/misplacement of <p> tag in Jackson2HashMapper Javadoc.

Resolves #2586

Author: jxblum

src/main/java/org/springframework/data/redis/hash/Jackson2HashMapper.java

@@ -76,7 +76,7 @@
  * Flattening requires all property names to not interfere with JSON paths. Using dots or brackets in map keys or as
  * property names is not supported using flattening. The resulting hash cannot be mapped back into an Object.
  * <h3>Example</h3>
- *
+ * <p>
  * <pre class="code">
  * class Person {
  * 	String firstname;
@@ -85,7 +85,7 @@
  * 	Date date;
  * 	LocalDateTime localDateTime;
  * }
- * <p>
+ *
  * class Address {
  * 	String city;
  * 	String country;