Document different ways to create a pipeline (#10762)
Document different ways to create a pipeline (#10762)

* Document different ways to create a pipeline: moved up/slightly modified paragraph on pipeline creation.

* Document different ways to create a pipeline: changed Finnish to Ukrainian in example for language without trained pipeline.

* Document different ways to create a pipeline: added explanation of blank pipeline.

* Document different ways to create a pipeline: exchanged Ukrainian with Yoruba.
explosion/spaCy,explosion/spaCy,explosion/spaCy,explosion/spaCy,explosion/spaCy,explosion/spaCy