message: Clarify the help text of `--aggressive` and `--precise` of `cargo update`
  This commit makes following 2 changes:
  Replace a parameter "<name>" with "SPEC". The former is an older name
  of the latter before
  Document that both options make sense when used with `-p`, which
  specifies SPEC.
diff: @@ -11,10 +11,16 @@ pub fn cli() -> App {
  .arg_package_spec_simple("Package to update")
  .arg(opt(
  "aggressive",
  - "Force updating all dependencies of <name> as well",
  + "Force updating all dependencies of SPEC as well when used with -p",
  ))
  .arg_dry_run("Don't actually write the lockfile")
  - .arg(opt("precise", "Update a single dependency to exactly PRECISE").value_name("PRECISE"))
  + .arg(
  + opt(
  + "precise",
  + "Update a single dependency to exactly PRECISE when used with -p",
  + )
  + .value_name("PRECISE"),
  + )
  .arg_manifest_path()
  .after_help("Run `cargo help update` for more detailed information.\n")
  }
  