chore: post migration updates - groupId, artifact url, repo references

Author: Shabirmean

language/snippets/pom.xml

@@ -1,11 +1,11 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <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/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
-  <groupId>com.google.cloud</groupId>
+  <groupId>com.example.language</groupId>
   <artifactId>language-snippets</artifactId>
   <packaging>jar</packaging>
   <name>Google Natural Language Snippets</name>
-  <url>https://github.com/googleapis/java-language</url>
+  <url>https://github.com/GoogleCloudPlatform/java-docs-samples/tree/main/language</url>
 
   <!--
     The parent pom defines common style checks and testing strategies for our samples.