message: docs: rephrased two sentences
  This commit rephrases a confusing sentence, and also adds more info to
  another sentence to be more understandable.
  PR Close
diff: @@ -20,9 +20,9 @@ A builder handler function receives two arguments; a set of input `options` (a J
  The separation of concerns here is the same as with [schematics](guide/glossary#schematic), which are used for other CLI commands that touch your code (such as `ng generate`).
  -* Options are given by the CLI user, context is provided by and provides access to the CLI Builder API, and the developer provides the behavior.
  +* The `options` object is provided by the CLI user, while the `context` object is provided by the CLI Builder API.
  -* The `BuilderContext` object provides access to the scheduling method, `BuilderContext.scheduleTarget()`. The scheduler executes the builder handler function with a given [target configuration](guide/glossary#target).
  +* In addition to the contextual information, the `context` object, which is an instance of the `BuilderContext`, also provides access to a scheduling method, `BuilderContext.scheduleTarget()`. The scheduler executes the builder handler function with a given [target configuration](guide/glossary#target).
  The builder handler function can be synchronous (return a value) or asynchronous (return a Promise), or it can watch and return multiple values (return an Observable).
  The return value or values must always be of type `BuilderOutput`.
  