[EFL] Fix several warnings of doxygen

@cherry-pick

https://bugs.webkit.org/show_bug.cgi?id=135643

Reviewed by Gyuyoung Kim.

* UIProcess/API/efl/ewk_context_menu_item.h: Removed /info which is not doxygen keyword and unnecessary to the user.
* UIProcess/API/efl/ewk_cookie_manager.h: Fixed parameter name.
* UIProcess/API/efl/ewk_form_submission_request.h: Removed # from Eina_List because doxygen may not know the EFL structures.
* UIProcess/API/efl/ewk_page_group.h: Fixed to match with parameter name.
* UIProcess/API/efl/ewk_settings.h: Fixed wrong keyword and parameter name.
* UIProcess/API/efl/ewk_text_checker.h: Ditto.
* UIProcess/API/efl/ewk_view.h:
- Used escape string for the tag.
- Used @code, @endcode for media query example.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@172284 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Conflicts:
	Source/WebKit2/ChangeLog
Deprecated injected bundle related API