Fix artifactId

Author: itssimon

README.md

@@ -64,7 +64,7 @@ Add the following dependency to your `pom.xml` file:
 ```xml
 <dependency>
   <groupId>io.apitally</groupId>
-  <artifactId>apitally-java</artifactId>
+  <artifactId>apitally</artifactId>
   <version>[0.1.0,)</version>
 </dependency>
 ```

pom.xml

@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>io.apitally</groupId>
-    <artifactId>apitally-java</artifactId>
+    <artifactId>apitally</artifactId>
     <version>0.1.0</version>
     <packaging>jar</packaging>
     <name>Apitally Java Client</name>