Fix code snippet title in documentation

Author: acogoluegnes

src/docs/asciidoc/advanced-topics.adoc

@@ -54,14 +54,14 @@ It must return `true` if a message is accepted, following the same semantics as
 
 As stated above, not all messages must have an associated filter value.
 Many applications may not need some filtering, so they can publish messages the regular way.
-And a stream can contain messages with and without an associated filter value.
+So a stream can contain messages with and without an associated filter value.
 
 By default, messages without a filter value (a.k.a _unfiltered_ messages) are not sent to a consumer that enabled filtering.
 
 But what if a consumer wants to process messages with a filter value and messages without any filter value as well?
 It must use the `matchUnfiltered()` method in its declaration and also make sure to keep the filtering logic consistent:
 
-.Declaring a consumer with a filter value and filtering logic
+.Getting unfiltered messages as well when enabling filtering
 [source,java,indent=0]
 --------
 include::{test-examples}/FilteringUsage.java[tag=consumer-match-unfiltered]