Update internals.rst

The proper idiom is "behind the scenes".

I also fixed the sentence structure.
minor #4034 Update internals.rst (redstar504)

This PR was submitted for the 2.5 branch but it was merged into the 2.3 branch instead (closes #4034).

Discussion
----------

Update internals.rst

The proper idiom is "behind the scenes".

I also fixed the sentence structure.

Commits
-------

9966b90 Update internals.rst
Update page_creation.rst

Fix sentence structure.
Update page_creation.rst
minor #4036 Update page_creation.rst (redstar504)

This PR was submitted for the 2.5 branch but it was merged into the 2.3 branch instead (closes #4036).

Discussion
----------

Update page_creation.rst

Fix sentence structure.

Commits
-------

7dafe20 Update page_creation.rst
85a3634 Update page_creation.rst
Update form_events.rst

EventSubscriberInterface::getSubscribedEvents() method is static.
Update form_events.rst

Remove extraneous quote.
bug #4031 Update form_events.rst (redstar504)

This PR was submitted for the 2.5 branch but it was merged into the 2.3 branch instead (closes #4031).

Discussion
----------

Update form_events.rst

EventSubscriberInterface::getSubscribedEvents() method is static.

Commits
-------

a716a28 Update form_events.rst
229cde3 Update form_events.rst
Merge branch '2.3' into 2.4

* 2.3:
  Update form_events.rst
  Update form_events.rst
  Update page_creation.rst
  Update page_creation.rst
  Update internals.rst
Merge branch '2.4' into 2.5

* 2.4:
  Update form_events.rst
  Update form_events.rst
  Update page_creation.rst
  Update page_creation.rst
  Update internals.rst
Merge branch '2.5'

* 2.5:
  Update form_events.rst
  Update form_events.rst
  Update page_creation.rst
  Update page_creation.rst
  Update internals.rst