Fix typo (GoogleCloudPlatform#680)

Author: jyane

bigquery/cloud-client/pom.xml

@@ -15,7 +15,7 @@
 -->
 <project>
   <modelVersion>4.0.0</modelVersion>
-  <groupId>come.example.bigquery</groupId>
+  <groupId>com.example.bigquery</groupId>
   <artifactId>bigquery-google-cloud-samples</artifactId>
   <packaging>jar</packaging>
 

datastore/cloud-client/pom.xml

@@ -15,7 +15,7 @@
 -->
 <project>
   <modelVersion>4.0.0</modelVersion>
-  <groupId>come.example.datastore</groupId>
+  <groupId>com.example.datastore</groupId>
   <artifactId>datastore-google-cloud-samples</artifactId>
   <packaging>jar</packaging>
 

logging/cloud-client/pom.xml

@@ -15,7 +15,7 @@
 -->
 <project>
   <modelVersion>4.0.0</modelVersion>
-  <groupId>come.example.logging</groupId>
+  <groupId>com.example.logging</groupId>
   <artifactId>logging-google-cloud-samples</artifactId>
   <packaging>jar</packaging>
 

pubsub/cloud-client/pom.xml

@@ -15,7 +15,7 @@
 -->
 <project>
   <modelVersion>4.0.0</modelVersion>
-  <groupId>come.example.pubsub</groupId>
+  <groupId>com.example.pubsub</groupId>
   <artifactId>pubsub-google-cloud-samples</artifactId>
   <packaging>jar</packaging>
 

spanner/cloud-client/pom.xml

@@ -30,7 +30,7 @@ limitations under the License.
 -->
 <project>
   <modelVersion>4.0.0</modelVersion>
-  <groupId>come.example.spanner</groupId>
+  <groupId>com.example.spanner</groupId>
   <artifactId>spanner-google-cloud-samples</artifactId>
   <packaging>jar</packaging>
 

storage/cloud-client/pom.xml

@@ -15,7 +15,7 @@
 -->
 <project>
   <modelVersion>4.0.0</modelVersion>
-  <groupId>come.example.storage</groupId>
+  <groupId>com.example.storage</groupId>
   <artifactId>storage-google-cloud-samples</artifactId>
   <packaging>jar</packaging>