chore: regenerate README (#427)

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

```
2021-04-09 19:36:29,343 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-resourcemanager/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-04-09 19:36:30,635 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

```
</details>

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

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-resourcemanager.git",
-        "sha": "2f806b2aa380722ab972cb7f92fababb8c554847"
+        "sha": "852dba40462bc1bd90c864931a8d196f5d558776"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "bb854b6c048619e3be4e8b8ce8ed10aa74ea78ef"
+        "sha": "1f5e6bc8dc8e3661ee550905fc070e55e1b6cea1"
       }
     }
   ]

README.md

@@ -8,9 +8,12 @@ Java idiomatic client for [Resource Manager API][product-docs].
 - [Product Documentation][product-docs]
 - [Client Library Documentation][javadocs]
 
+
 > Note: This client is a work-in-progress, and may occasionally
 > make backwards-incompatible changes.
 
+
+
 ## Quickstart
 
 If you are using Maven with [BOM][libraries-bom], add this to your pom.xml file
@@ -54,12 +57,12 @@ compile 'com.google.cloud:google-cloud-resourcemanager'
 ```
 If you are using Gradle without BOM, add this to your dependencies
 ```Groovy
-compile 'com.google.cloud:google-cloud-resourcemanager:0.118.12-alpha'
+compile 'com.google.cloud:google-cloud-resourcemanager:0.119.0-alpha'
 ```
 
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-resourcemanager" % "0.118.12-alpha"
+libraryDependencies += "com.google.cloud" % "google-cloud-resourcemanager" % "0.119.0-alpha"
 ```
 
 ## Authentication