Add 'dependencies' tags & fix broken vision link. (GoogleCloudPlatform#929)

* Fix link to vision/face-detection in vision/README.md.
* Add 'dependencies' region_tag to bigquery/cloud-client and translate/cloud-client pom.xml files.

Author: dzlier-gcp

bigquery/cloud-client/pom.xml

@@ -34,11 +34,13 @@
   </properties>
 
   <dependencies>
+    <!-- [START dependencies] -->
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-bigquery</artifactId>
       <version>0.30.0-beta</version>
     </dependency>
+    <!-- [END dependencies] -->
     <dependency>
       <groupId>commons-cli</groupId>
       <artifactId>commons-cli</artifactId>

translate/cloud-client/pom.xml

@@ -34,11 +34,13 @@
   </properties>
 
   <dependencies>
+    <!-- [START dependencies] -->
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-translate</artifactId>
       <version>1.12.0</version>
     </dependency>
+    <!-- [END dependencies] -->
 
     <!-- Test dependencies -->
     <dependency>

vision/README.md

@@ -47,7 +47,7 @@ This sample annotates an image with labels based on its content.
 This sample identifies faces within an image.
 
 - [Quickstart Walkthrough](https://cloud.google.com/vision/docs/face-tutorial)
-- [Java Code](face_detection)
+- [Java Code](face-detection)
 
 ### Landmark Detection Using Google Cloud Storage
 
@@ -67,4 +67,3 @@ queried to find images that match a given set of words, and to list text that
 was found in each matching image.
 
 [Documentation and Java Code](text)
-