chore: regenerate README (#191)

This PR was generated using Autosynth. 🌈


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

```
2021-07-27 20:57:00,468 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-video-transcoder/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-07-27 20:57:01,975 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/153ba41e-9f8c-4189-81ea-b502a1f7f411/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-video-transcoder.git",
-        "sha": "414474b0954ee704808bb218f0f6653155febf04"
+        "sha": "dee9115c1e87a36e123fc72433e5d1a32796e08c"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "e44dc0c742b1230887a73552357e0c18dcc30b92"
+        "sha": "3d32990b6f4b57be77455e3ca89e6e21cd0c06b3"
       }
     }
   ]