Improve changelog (#1545, #1637)

Author: vy

src/changelog/.2.x.x/1545_add_warn_in_case_of_incorrect_syntax_of_highlighting_style.xml

@@ -17,13 +17,12 @@
   -->
 <entry xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns="http://logging.apache.org/log4j/changelog"
-       xsi:schemaLocation="http://logging.apache.org/log4j/changelog https://logging.apache.org/log4j/changelog-0.1.0.xsd"
-       type="fixed">
+       xsi:schemaLocation="http://logging.apache.org/log4j/changelog https://logging.apache.org/log4j/changelog-0.1.1.xsd"
+       type="added">
     <issue id="1545" link="https://github.com/apache/logging-log4j2/issues/1545"/>
-    <author id="aawad6"/>
-    <author name="Ammar Awad"/>
-    <description format="asciidoc">
-        Add a warning in case of incorrect syntax of highlighting style (without =).
-        e.g. %highlight{%5level}{LOGBACK} should be %highlight{%5level}{STYLE=LOGBACK}
-    </description>
+    <issue id="1637" link="https://github.com/apache/logging-log4j2/pull/1637"/>
+    <author id="github:aawad6" name="Ammar Awad"/>
+    <author id="github:ppkarwasz"/>
+    <author id="github:vy"/>
+    <description format="asciidoc">Added a warning for incorrect syntax of highlighting styles</description>
 </entry>

src/site/_release-notes/_2.x.x.adoc

@@ -53,6 +53,7 @@ For complete information on Apache Log4j 2, including instructions on how to sub
 === Added
 
 * Added marker parent support to `JsonTemplateLayout` (https://github.com/apache/logging-log4j2/pull/1381[1381])
+* Added a warning for incorrect syntax of highlighting styles (https://github.com/apache/logging-log4j2/issues/1545[1545], https://github.com/apache/logging-log4j2/pull/1637[1637])
 
 === Changed