chore: regenerate README (#285)

This PR was generated using Autosynth. 🌈


<details><summary>Log from Synthtool</summary>

```
2020-12-14 21:26:09,434 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-datastore/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2020-12-14 21:26:10,384 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

```
</details>

Full log will be available here:
https://source.cloud.google.com/results/invocations/e8ec50e2-4062-4866-8b2f-abcfa547ecc5/targets

- [ ] To automatically regenerate this PR, check this box.

Author: yoshi-automation

.github/readme/synth.metadata/synth.metadata

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-datastore.git",
-        "sha": "83a0a61c19b0256b930a2b50a4be728f03922e48"
+        "sha": "b323187011d66bb12410a2f762c13bb8e21ad227"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "39b7149da4026765385403632db3c6f63db96b2c"
+        "sha": "996775eca5fd934edac3c2ae34b80ff0395b1717"
       }
     }
   ]

README.md

@@ -17,7 +17,7 @@ If you are using Maven with [BOM][libraries-bom], add this to your pom.xml file
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>libraries-bom</artifactId>
-      <version>13.4.0</version>
+      <version>16.1.0</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>
@@ -38,18 +38,18 @@ If you are using Maven without BOM, add this to your dependencies:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-datastore</artifactId>
-  <version>1.105.0</version>
+  <version>1.105.3</version>
 </dependency>
 
 ```
 
 If you are using Gradle, add this to your dependencies
 ```Groovy
-compile 'com.google.cloud:google-cloud-datastore:1.105.1'
+compile 'com.google.cloud:google-cloud-datastore:1.105.3'
 ```
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-datastore" % "1.105.1"
+libraryDependencies += "com.google.cloud" % "google-cloud-datastore" % "1.105.3"
 ```
 
 ## Authentication
@@ -180,12 +180,12 @@ if (entity != null) {
 ```
 
 The complete source code can be found at
-[UpdateEntity.java](https://github.com/googleapis/google-cloud-java/blob/master/google-cloud-examples/src/main/java/com/google/cloud/examples/datastore/snippets/UpdateEntity.java).
+[UpdateEntity.java](../../google-cloud-examples/src/main/java/com/google/cloud/examples/datastore/snippets/UpdateEntity.java).
 
 #### Complete source code
 
 In
-[AddEntitiesAndRunQuery.java](https://github.com/googleapis/google-cloud-java/blob/master/google-cloud-examples/src/main/java/com/google/cloud/examples/datastore/snippets/AddEntitiesAndRunQuery.java)
+[AddEntitiesAndRunQuery.java](../../google-cloud-examples/src/main/java/com/google/cloud/examples/datastore/snippets/AddEntitiesAndRunQuery.java)
 we put together all the code to store data and run queries into one program. The program assumes that you are
 running on Compute Engine or from your own desktop. To run the example on App Engine, simply move
 the code from the main method to your application's servlet class and change the print statements to
@@ -260,6 +260,8 @@ Java 8 OSX | [![Kokoro CI][kokoro-badge-image-3]][kokoro-badge-link-3]
 Java 8 Windows | [![Kokoro CI][kokoro-badge-image-4]][kokoro-badge-link-4]
 Java 11 | [![Kokoro CI][kokoro-badge-image-5]][kokoro-badge-link-5]
 
+Java is a registered trademark of Oracle and/or its affiliates.
+
 [product-docs]: https://cloud.google.com/datastore
 [javadocs]: https://googleapis.dev/java/google-cloud-datastore/latest/index.html
 [kokoro-badge-image-1]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-datastore/java7.svg