docs(di): add clarification for injection

[kambleaa007]

AngularJS is in LTS mode

We are no longer accepting changes that are not critical bug fixes into this project.
See https://blog.angular.io/stable-angularjs-and-long-term-support-7e077635ee9c for more detail.

Does this PR fix a regression since 1.7.0, a security flaw, or a problem caused by a new browser version?

What is the current behavior? (You can also link to an open issue here)

What is the new behavior (if this is a feature change)?

Does this PR introduce a breaking change?

Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Fix/Feature: Docs have been added/updated
• Fix/Feature: Tests have been added; existing tests pass

Other information:

[gkalpak]

This seems to include a change that is already in #16833, so I assume it was opened by accident.
(Note: If you want to make a change to #16833, you need to push the changes to the patch-2 branch of your remote.)

[kambleaa007]

I have made changes, Pushed patch 2 on master Now it must be pushed to angularjs/master Need your help in this case

…

On Tue, Mar 5, 2019 at 6:10 PM George Kalpakas ***@***.***> wrote: Closed #16848 <#16848>. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#16848 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AS5otzMHBnUr90dwkSrJ8p6pNHVVjdb5ks5vTmWqgaJpZM4bd3vK> .