chore: copy README to docfx-yml dir (#457)

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Author: yoshi-automation

.kokoro/release/publish_javadoc11.sh

@@ -40,6 +40,9 @@ export VERSION=$(grep ${NAME}: versions.txt | cut -d: -f3)
 # generate yml
 mvn clean site -B -q -P docFX
 
+# copy README to docfx-yml dir and rename index.md
+cp README.md target/docfx-yml/index.md
+
 pushd target/docfx-yml
 
 # create metadata
@@ -52,4 +55,4 @@ python3 -m docuploader create-metadata \
 python3 -m docuploader upload . \
  --credentials ${CREDENTIALS} \
  --staging-bucket ${STAGING_BUCKET_V2} \
- --destination-prefix docfx-
+ --destination-prefix docfx

synth.metadata

@@ -4,7 +4,7 @@
  "git": {
  "name": ".",
  "remote": "https://github.com/googleapis/java-monitoring.git",
- "sha": "605c6db7a34242d3cf110285c95b6f8a3409d7a9"
+ "sha": "35ca49b598c3e3f23e53afd375aa4348a2607f3b"
  }
  },
  {
@@ -19,7 +19,7 @@
  "git": {
  "name": "synthtool",
  "remote": "https://github.com/googleapis/synthtool.git",
- "sha": "21da7d9fa02f6916d9f87cf4072b3547b5c72eb5"
+ "sha": "d0bdade9a962042dc0f770cf631086f3db59b5b0"
  }
  }
  ],