chore: regenerate README (#487)

This PR was generated using Autosynth. 🌈


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

```
2021-04-12 14:26:47,873 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-translate/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-04-12 14:26:49,146 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/438f7894-20c5-4735-a679-407638fb43f8/targets

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

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-translate.git",
-        "sha": "e0e66015ea2c8bb74186b9205b0146cad2683a56"
+        "sha": "9bce136e55750c318abd0232b2ee26cad32e1a9b"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "1f5e6bc8dc8e3661ee550905fc070e55e1b6cea1"
+        "sha": "0a071b3460344886297a304253bf924aa68ddb7e"
       }
     }
   ]

README.md

@@ -8,9 +8,6 @@ Java idiomatic client for [Cloud Translation][product-docs].
 - [Product Documentation][product-docs]
 - [Client Library Documentation][javadocs]
 
-
-
-
 ## Quickstart
 
 If you are using Maven with [BOM][libraries-bom], add this to your pom.xml file
@@ -49,7 +46,7 @@ If you are using Maven without BOM, add this to your dependencies:
 
 If you are using Gradle 5.x or later, add this to your dependencies
 ```Groovy
-implementation platform('com.google.cloud:libraries-bom:19.2.1')
+implementation platform('com.google.cloud:libraries-bom:20.0.0')
 
 compile 'com.google.cloud:google-cloud-translate'
 ```