message: Changed wording for required-features docs to be more clear that missing features means the target is skipped.
diff: @@ -553,9 +553,10 @@ harness = true
  ## The `required-features` field (optional)
  -The `required-features` field specifies which features must be selected for the
  -target to be built. This is only relevant for the `[[bin]]`, `[[bench]]`,
  -`[[test]]`, and `[[example]]` sections, it has no effect on `[lib]`.
  +The `required-features` field specifies which features the target needs in order
  +to be built. If any of the required features are not selected, the target will
  +be skipped. This is only relevant for the `[[bin]]`, `[[bench]]`, `[[test]]`,
  +and `[[example]]` sections, it has no effect on `[lib]`.
  ```toml
  [features]
  