Merge pull request #5875 from kawashima-fj/pr/v4.0.x/javadoc-tag

v4.0.x: java: Fix javadoc build failure with OpenJDK 11

ompi/mpi/java/java/Comm.java

@@ -653,7 +653,7 @@ public class Comm implements Freeable, Cloneable
 
 	/**
 	 * Start a buffered mode, nonblocking send.
-	 * <p>Java binding of the MPI operation <tt>MPI_IBSEND</tt>.
+	 * <p>Java binding of the MPI operation {@code MPI_IBSEND}.
 	 * @param buf   send buffer
 	 * @param count number of items to send
 	 * @param type  datatype of each item in send buffer