chore: regenerate README (#623)

This PR was generated using Autosynth. 🌈


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

```
2021-08-12 20:57:12,014 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-logging/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-08-12 20:57:13,261 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

```
</details>

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https://source.cloud.google.com/results/invocations/65e6353c-f439-43d6-9c27-5d97c825dba2/targets

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Author: yoshi-automation

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

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-logging.git",
-        "sha": "b0fd9dcc6a81d25d430ac4390568a3512a6b1005"
+        "sha": "1b3ba0bce72ce7755d05e0632e7ca5a51f7a9975"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "5605f38f153e7627ba4441a2c5181060b664d224"
+        "sha": "ff01716e16d2c6e87eaf87197b753ac9fcbbed5d"
       }
     }
   ]

README.md

@@ -57,13 +57,13 @@ compile 'com.google.cloud:google-cloud-logging'
 If you are using Gradle without BOM, add this to your dependencies
 
 ```Groovy
-compile 'com.google.cloud:google-cloud-logging:3.0.0'
+compile 'com.google.cloud:google-cloud-logging:3.0.1'
 ```
 
 If you are using SBT, add this to your dependencies
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-logging" % "3.0.0"
+libraryDependencies += "com.google.cloud" % "google-cloud-logging" % "3.0.1"
 ```
 
 ## Authentication
@@ -231,6 +231,7 @@ Samples are in the [`samples/`](https://github.com/googleapis/java-logging/tree/
 | Sample                      | Source Code                       | Try it |
 | --------------------------- | --------------------------------- | ------ |
 | Get Sink Metadata | [source code](https://github.com/googleapis/java-logging/blob/master/samples/snippets/src/main/java/com/example/logging/GetSinkMetadata.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-logging&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/logging/GetSinkMetadata.java) |
+| List Log Entries | [source code](https://github.com/googleapis/java-logging/blob/master/samples/snippets/src/main/java/com/example/logging/ListLogEntries.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-logging&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/logging/ListLogEntries.java) |
 | List Logs | [source code](https://github.com/googleapis/java-logging/blob/master/samples/snippets/src/main/java/com/example/logging/ListLogs.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-logging&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/logging/ListLogs.java) |
 | Log Entry Write Http Request | [source code](https://github.com/googleapis/java-logging/blob/master/samples/snippets/src/main/java/com/example/logging/LogEntryWriteHttpRequest.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-logging&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/logging/LogEntryWriteHttpRequest.java) |
 | Quickstart Sample | [source code](https://github.com/googleapis/java-logging/blob/master/samples/snippets/src/main/java/com/example/logging/QuickstartSample.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/java-logging&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/logging/QuickstartSample.java) |