fix typo in phpdoc of yii\redis\Connection [skip ci]
Merge pull request #4161 from IndeedPlusPlus/patch-1

fix typo in phpdoc of yii\redis\Connection [skip ci]
Fixes #3992
Fixes #4147
Merge branch 'master' of git://github.com/yiisoft/yii2
Fixes #4135
Fixed test for absent salt in HKDF input.
Merge branch 'master' of git://github.com/yiisoft/yii2 into 4131-key-longer-than-hash