MINOR: Fix documentation table of contents and `BLOCK_ON_BUFFER_FULL_DOC`

Author: Ismael Juma <ismael@juma.me.uk>

Reviewers: Gwen Shapira

Closes #1423 from ijuma/minor-doc-fixes

clients/src/main/java/org/apache/kafka/clients/producer/ProducerConfig.java

@@ -144,11 +144,10 @@ public class ProducerConfig extends AbstractConfig {
     @Deprecated
     public static final String BLOCK_ON_BUFFER_FULL_CONFIG = "block.on.buffer.full";
     private static final String BLOCK_ON_BUFFER_FULL_DOC = "When our memory buffer is exhausted we must either stop accepting new records (block) or throw errors. "
-                                                           + "By default this setting is false and the producer will no longer throw a BufferExhaustException but instead will use the {@link #MAX_BLOCK_MS_CONFIG} "
+                                                           + "By default this setting is false and the producer will no longer throw a BufferExhaustException but instead will use the <code>" + MAX_BLOCK_MS_CONFIG + "</code> "
                                                            + "value to block, after which it will throw a TimeoutException. Setting this property to true will set the <code>" + MAX_BLOCK_MS_CONFIG + "</code> to Long.MAX_VALUE. "
                                                            + "<em>Also if this property is set to true, parameter <code>" + METADATA_FETCH_TIMEOUT_CONFIG + "</code> is not longer honored.</em>"
-                                                           + "<p>"
-                                                           + "This parameter is deprecated and will be removed in a future release. "
+                                                           + "<p>This parameter is deprecated and will be removed in a future release. "
                                                            + "Parameter <code>" + MAX_BLOCK_MS_CONFIG + "</code> should be used instead.";
 
     /** <code>buffer.memory</code> */

docs/documentation.html

@@ -123,7 +123,8 @@ Prior releases: <a href="/07/documentation.html">0.7.x</a>, <a href="/08/documen
             <li><a href="#security_ssl">7.2 Encryption and Authentication using SSL</a></li>
             <li><a href="#security_sasl">7.3 Authentication using SASL</a></li>
             <li><a href="#security_authz">7.4 Authorization and ACLs</a></li>
-            <li><a href="#zk_authz">7.5 ZooKeeper Authentication</a></li>
+            <li><a href="#security_rolling_upgrade">7.5 Incorporating Security Features in a Running Cluster</a></li>
+            <li><a href="#zk_authz">7.6 ZooKeeper Authentication</a></li>
             <ul>
                 <li><a href="#zk_authz_new">New Clusters</a></li>
                 <li><a href="#zk_authz_migration">Migrating Clusters</a></li>