Fix Homepage and Issue Tracker (#185)

Fix Homepage and Issue Tracker links of the Sonarqube Marketplace page

Author: geomcquat

pom.xml

@@ -10,7 +10,7 @@
 
     <name>Flutter SonarQube Plugin</name>
     <description>Enables analysis of Dart and Flutter projects into SonarQube.</description>
-    <url>https://github.com/insideapp-oss/sonar-flutter</url>
+    <url>https://github.com/insideapp-oss/sonar-flutter/tree/master</url>
 
     <modules>
         <module>sonar-flutter-plugin</module>
@@ -30,6 +30,10 @@
         </license>
     </licenses>
 
+    <issueManagement>
+        <url>https://github.com/insideapp-oss/sonar-flutter/issues</url>
+    </issueManagement>
+
     <developers>
         <developer>
             <id>zippy1978</id>
@@ -268,4 +272,4 @@
         </plugins>
     </build>
 
-</project>
+</project>