message: README: Update release instructions
diff: @@ -171,6 +171,7 @@ simply by running `graph indexer`.
  ```sh
  $ graph --help
  + ...
  indexer status Check the status of an indexer
  indexer rules stop (never) Never index a deployment (and stop indexing it if necessary)
  indexer rules start (always) Always index a deployment (and start indexing it if necessary)
  @@ -270,7 +271,6 @@ Creating a new release involves the following steps:
  chan added ...
  chan fixed ...
  chan changed ...
  - chan release <new-version>
  popd
  pushd packages/indexer-agent
  @@ -287,22 +287,12 @@ Creating a new release involves the following steps:
  ```
  -2. Commit these changelogs:
  +2. Publish the release. This includes committing the changelogs, tagging the
  + new version and publishing packages on npmjs.com.
  ```sh
  - git add packages/**/CHANGELOG.md
  - git commit -m "Update changelogs ahead of release"
  + yarn release <version>
  ```
  -
  -3. Publish a new release:
  -
  - ```sh
  - lerna publish
  - ```
  -
  - When it asks for the version to release, select the same one that was used
  - when updating the changelogs.
  -
  # Copyright
  Copyright &copy; 2020 The Graph Foundation
  