Improve log4j-api description (#1474)

Author: vy

log4j-api/pom.xml

@@ -16,17 +16,27 @@
   ~ limitations under the License.
   -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+
   <modelVersion>4.0.0</modelVersion>
+
   <parent>
     <groupId>org.apache.logging.log4j</groupId>
     <artifactId>log4j</artifactId>
     <version>${revision}</version>
     <relativePath>../log4j-parent</relativePath>
   </parent>
+
   <artifactId>log4j-api</artifactId>
-  <packaging>jar</packaging>
+
   <name>Apache Log4j API</name>
-  <description>The Apache Log4j API</description>
+
+  <description>
+    The logging API of the Log4j project.
+    Library and application code can log against this API.
+    It contains a simple built-in implementation (`SimpleLogger`) for trivial use cases.
+    Production applications are recommended to use it in combination with a fully-fledged implementation, such as Log4j Core.
+  </description>
+
   <properties>
     <maven.javadoc.skip>false</maven.javadoc.skip>