修复编译问题

skywalking-sdk-plugin/httpClient-4.x-plugin/pom.xml

@@ -8,9 +8,12 @@
 		<artifactId>skywalking-sdk-plugin</artifactId>
 		<version>1.0-SNAPSHOT</version>
 	</parent>
+	
 	<artifactId>skywalking-httpClient-4.x-plugin</artifactId>
-	<name>skywalking-httpClient-4.x-plugin</name>
-	<url>http://maven.apache.org</url>
+	<packaging>jar</packaging>
+
+    <name>httpclient-4.x-plugin</name>
+    <url>http://maven.apache.org</url>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>