message: docs(dev-infra): fix command and typos in `browsers/README.md`
  This commit fixes the instructions in `dev-infra/browsers/README.md` to
  use the `shasum` executable (instead of `sha256`, which does not exist
  afaict).
  The commit also fixes a couple of typos.
  PR Close
diff: @@ -34,7 +34,7 @@ The process of updating the Chrome or Firefox version is not straightforward, bu
  Chromium 83.0.4103.0
  ```
  -3. Update the chrome & chrome driver build numbers in `dev-infra/browsers/chromium/chromium.bzl` and run either run `bazel query @org_chromium_chromium_amd64//...` to prompt Bazel to calculate the new `sha256` for each platform binary or determine the new `sha256` values manually.
  +3. Update the chrome & chrome driver build numbers in `dev-infra/browsers/chromium/chromium.bzl` and either run `bazel query @org_chromium_chromium_amd64//...` to prompt Bazel to calculate the new `sha256` for each platform binary or determine the new `sha256` values manually.
  Here is an example with `curl` & `shasum`:
  ``` bash
  @@ -55,7 +55,7 @@ and their corresponding `yarn.lock` files.
  ## Firefox
  In order to update Firefox, open the `dev-infra/browsers/firefox/firefox.bzl` file and update the repository URLs to the desired version.
  -e.g.
  +For example:
  ```bzl
  platform_http_file(
  @@ -67,8 +67,11 @@ platform_http_file(
  )
  ```
  -Go to the `urls` property and update the URL by replacing all `78.0` occurrences with the version you intend to use.
  +1. Go to the `urls` property and update the URL by replacing all `78.0` occurrences with the version you intend to use.
  Once done, do the same change for other platforms (such as `macos`).
  -Finally, update the `sha256` checksum of the browser archives.
  -You can do this by downloading the artifacts from the URLs you just updated, and then running on those files: `sha256 <path>`.
  +2. Update the `sha256` checksum of the browser archives.
  + You can do this by downloading the artifacts from the URLs you just updated, and then running `shasum` on those files:
  + ```sh
  + curl <BROWSER_URL> | sha256 -a 256
  + ```
  