Fix a typo "o" -> "to" in structure-assets.md

close #5527
Update output-data-widgets.md

changed  $query->from(['author' => 'users'])  to  $query->from(['author' , 'users']) on line 354
Merge pull request #5530 from amjadniazi48/patch-1

Update output-data-widgets.md
Typo in the english version
Revert "Update output-data-widgets.md"
Merge pull request #5532 from yiisoft/revert-5530-patch-1

Revert "Update output-data-widgets.md"
Update ArrayDataProvider.php

ensure syntax highlighting
Remove stability=dev

Shouldn't stability=dev be removed?
Merge pull request #5534 from germanliu/patch-1

[skip ci] Remove stability=dev
Update tutorial-mailing.md
Merge pull request #5535 from germanliu/patch-2

[ci skip] Update tutorial-mailing.md
phpdoc fixes and additions
Used import instead of FQN
more phpdoc
Removed unused aliases
Removed unused code
Added missing phpdoc
Fixed typos [skip ci]
Merge pull request #5538 from nikbas/fix-properties-guide

[skip ci] Fixed typos in properties guide
Fix typos [skip ci]